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Finding the Fourth Proportional to 72,248.91, 108,373.52 and 38,984.64

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Solution

The fourth proportional to 72,248.91, 108,373.52 and 38,984.64 is: 58,477.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,248.91 : 108,373.52 = 38,984.64 : x
  2. Step 2: Convert to fraction form
    72,248.91/108,373.52 = 38,984.64/x
  3. Step 3: Cross multiply
    72,248.91x = 108,373.52 × 38,984.64
  4. Step 4: Simplify right side
    72,248.91x = 4,224,902,662.73
  5. Step 5: Solve for x
    x = 4,224,902,662.73/72,248.91
  6. Step 6: Final answer
    x = 58,477.04

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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.