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Finding the Fourth Proportional to 72,754.15, 108,488.71 and 63,905.71

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Solution

The fourth proportional to 72,754.15, 108,488.71 and 63,905.71 is: 95,294.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,754.15 : 108,488.71 = 63,905.71 : x
  2. Step 2: Convert to fraction form
    72,754.15/108,488.71 = 63,905.71/x
  3. Step 3: Cross multiply
    72,754.15x = 108,488.71 × 63,905.71
  4. Step 4: Simplify right side
    72,754.15x = 6,933,048,039.53
  5. Step 5: Solve for x
    x = 6,933,048,039.53/72,754.15
  6. Step 6: Final answer
    x = 95,294.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.