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Finding the Fourth Proportional to 91,654.75, 126,351.02 and 64,347.70

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Solution

The fourth proportional to 91,654.75, 126,351.02 and 64,347.70 is: 88,706.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,654.75 : 126,351.02 = 64,347.70 : x
  2. Step 2: Convert to fraction form
    91,654.75/126,351.02 = 64,347.70/x
  3. Step 3: Cross multiply
    91,654.75x = 126,351.02 × 64,347.70
  4. Step 4: Simplify right side
    91,654.75x = 8,130,398,008.86
  5. Step 5: Solve for x
    x = 8,130,398,008.86/91,654.75
  6. Step 6: Final answer
    x = 88,706.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.