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Finding the Fourth Proportional to 81,576.90, 112,575.42 and 45,766.14

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Solution

The fourth proportional to 81,576.90, 112,575.42 and 45,766.14 is: 63,156.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,576.90 : 112,575.42 = 45,766.14 : x
  2. Step 2: Convert to fraction form
    81,576.90/112,575.42 = 45,766.14/x
  3. Step 3: Cross multiply
    81,576.90x = 112,575.42 × 45,766.14
  4. Step 4: Simplify right side
    81,576.90x = 5,152,142,432.28
  5. Step 5: Solve for x
    x = 5,152,142,432.28/81,576.90
  6. Step 6: Final answer
    x = 63,156.88

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1.5x scale

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.