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Finding the Fourth Proportional to 91,657.77, 126,487.54 and 51,371.52

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Solution

The fourth proportional to 91,657.77, 126,487.54 and 51,371.52 is: 70,892.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,657.77 : 126,487.54 = 51,371.52 : x
  2. Step 2: Convert to fraction form
    91,657.77/126,487.54 = 51,371.52/x
  3. Step 3: Cross multiply
    91,657.77x = 126,487.54 × 51,371.52
  4. Step 4: Simplify right side
    91,657.77x = 6,497,857,190.86
  5. Step 5: Solve for x
    x = 6,497,857,190.86/91,657.77
  6. Step 6: Final answer
    x = 70,892.60

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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.