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Finding the Fourth Proportional to 91,862.74, 126,760.80 and 51,580.90

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Solution

The fourth proportional to 91,862.74, 126,760.80 and 51,580.90 is: 71,176.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,862.74 : 126,760.80 = 51,580.90 : x
  2. Step 2: Convert to fraction form
    91,862.74/126,760.80 = 51,580.90/x
  3. Step 3: Cross multiply
    91,862.74x = 126,760.80 × 51,580.90
  4. Step 4: Simplify right side
    91,862.74x = 6,538,436,148.72
  5. Step 5: Solve for x
    x = 6,538,436,148.72/91,862.74
  6. Step 6: Final answer
    x = 71,176.15

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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.