Home / 54,555.05-75,285.25-30,681.73

Finding the Fourth Proportional to 54,555.05, 75,285.25 and 30,681.73

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Solution

The fourth proportional to 54,555.05, 75,285.25 and 30,681.73 is: 42,340.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,555.05 : 75,285.25 = 30,681.73 : x
  2. Step 2: Convert to fraction form
    54,555.05/75,285.25 = 30,681.73/x
  3. Step 3: Cross multiply
    54,555.05x = 75,285.25 × 30,681.73
  4. Step 4: Simplify right side
    54,555.05x = 2,309,881,307.41
  5. Step 5: Solve for x
    x = 2,309,881,307.41/54,555.05
  6. Step 6: Final answer
    x = 42,340.37

Related Problems

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Half scale
Find fourth proportional to 109,110.11, 150,570.50 and 61,363.45
Double scale
Find fourth proportional to 54,556.05, 75,286.63 and 30,682.73
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.