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Finding the Fourth Proportional to 72,754.65, 108,489.47 and 63,906.21

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Solution

The fourth proportional to 72,754.65, 108,489.47 and 63,906.21 is: 95,294.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,754.65 : 108,489.47 = 63,906.21 : x
  2. Step 2: Convert to fraction form
    72,754.65/108,489.47 = 63,906.21/x
  3. Step 3: Cross multiply
    72,754.65x = 108,489.47 × 63,906.21
  4. Step 4: Simplify right side
    72,754.65x = 6,933,150,533.08
  5. Step 5: Solve for x
    x = 6,933,150,533.08/72,754.65
  6. Step 6: Final answer
    x = 95,294.95

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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.