Home / 54,221.67-81,316.86-18,681.54

Finding the Fourth Proportional to 54,221.67, 81,316.86 and 18,681.54

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Solution

The fourth proportional to 54,221.67, 81,316.86 and 18,681.54 is: 28,016.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,221.67 : 81,316.86 = 18,681.54 : x
  2. Step 2: Convert to fraction form
    54,221.67/81,316.86 = 18,681.54/x
  3. Step 3: Cross multiply
    54,221.67x = 81,316.86 × 18,681.54
  4. Step 4: Simplify right side
    54,221.67x = 1,519,124,172.76
  5. Step 5: Solve for x
    x = 1,519,124,172.76/54,221.67
  6. Step 6: Final answer
    x = 28,016.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.