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Finding the Fourth Proportional to 81,586.73, 112,600.90 and 45,778.86

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Solution

The fourth proportional to 81,586.73, 112,600.90 and 45,778.86 is: 63,181.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,586.73 : 112,600.90 = 45,778.86 : x
  2. Step 2: Convert to fraction form
    81,586.73/112,600.90 = 45,778.86/x
  3. Step 3: Cross multiply
    81,586.73x = 112,600.90 × 45,778.86
  4. Step 4: Simplify right side
    81,586.73x = 5,154,740,836.97
  5. Step 5: Solve for x
    x = 5,154,740,836.97/81,586.73
  6. Step 6: Final answer
    x = 63,181.12

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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.