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Finding the Fourth Proportional to 64,101.60, 96,131.88 and 21,397.86

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Solution

The fourth proportional to 64,101.60, 96,131.88 and 21,397.86 is: 32,089.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,101.60 : 96,131.88 = 21,397.86 : x
  2. Step 2: Convert to fraction form
    64,101.60/96,131.88 = 21,397.86/x
  3. Step 3: Cross multiply
    64,101.60x = 96,131.88 × 21,397.86
  4. Step 4: Simplify right side
    64,101.60x = 2,057,016,509.78
  5. Step 5: Solve for x
    x = 2,057,016,509.78/64,101.60
  6. Step 6: Final answer
    x = 32,089.94

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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.