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Finding the Fourth Proportional to 72,697.20, 108,916.20 and 62,329.20

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Solution

The fourth proportional to 72,697.20, 108,916.20 and 62,329.20 is: 93,382.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,697.20 : 108,916.20 = 62,329.20 : x
  2. Step 2: Convert to fraction form
    72,697.20/108,916.20 = 62,329.20/x
  3. Step 3: Cross multiply
    72,697.20x = 108,916.20 × 62,329.20
  4. Step 4: Simplify right side
    72,697.20x = 6,788,659,613.04
  5. Step 5: Solve for x
    x = 6,788,659,613.04/72,697.20
  6. Step 6: Final answer
    x = 93,382.68

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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.