Home / 54,845.40-75,685.68-30,970.38

Finding the Fourth Proportional to 54,845.40, 75,685.68 and 30,970.38

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Solution

The fourth proportional to 54,845.40, 75,685.68 and 30,970.38 is: 42,738.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,845.40 : 75,685.68 = 30,970.38 : x
  2. Step 2: Convert to fraction form
    54,845.40/75,685.68 = 30,970.38/x
  3. Step 3: Cross multiply
    54,845.40x = 75,685.68 × 30,970.38
  4. Step 4: Simplify right side
    54,845.40x = 2,344,014,270.16
  5. Step 5: Solve for x
    x = 2,344,014,270.16/54,845.40
  6. Step 6: Final answer
    x = 42,738.58

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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.