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Finding the Fourth Proportional to 69,561.68, 95,972.96 and 39,343.28

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Solution

The fourth proportional to 69,561.68, 95,972.96 and 39,343.28 is: 54,281.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,561.68 : 95,972.96 = 39,343.28 : x
  2. Step 2: Convert to fraction form
    69,561.68/95,972.96 = 39,343.28/x
  3. Step 3: Cross multiply
    69,561.68x = 95,972.96 × 39,343.28
  4. Step 4: Simplify right side
    69,561.68x = 3,775,891,037.71
  5. Step 5: Solve for x
    x = 3,775,891,037.71/69,561.68
  6. Step 6: Final answer
    x = 54,281.19

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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.