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Finding the Fourth Proportional to 64,767.66, 97,154.96 and 20,397.87

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Solution

The fourth proportional to 64,767.66, 97,154.96 and 20,397.87 is: 30,597.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,767.66 : 97,154.96 = 20,397.87 : x
  2. Step 2: Convert to fraction form
    64,767.66/97,154.96 = 20,397.87/x
  3. Step 3: Cross multiply
    64,767.66x = 97,154.96 × 20,397.87
  4. Step 4: Simplify right side
    64,767.66x = 1,981,753,777.61
  5. Step 5: Solve for x
    x = 1,981,753,777.61/64,767.66
  6. Step 6: Final answer
    x = 30,597.89

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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.