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Finding the Fourth Proportional to 64,487.80, 96,731.70 and 59,822.20

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Solution

The fourth proportional to 64,487.80, 96,731.70 and 59,822.20 is: 89,733.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,487.80 : 96,731.70 = 59,822.20 : x
  2. Step 2: Convert to fraction form
    64,487.80/96,731.70 = 59,822.20/x
  3. Step 3: Cross multiply
    64,487.80x = 96,731.70 × 59,822.20
  4. Step 4: Simplify right side
    64,487.80x = 5,786,703,103.74
  5. Step 5: Solve for x
    x = 5,786,703,103.74/64,487.80
  6. Step 6: Final answer
    x = 89,733.30

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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.