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Finding the Fourth Proportional to 81,560.62, 112,558.80 and 45,752.86

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Solution

The fourth proportional to 81,560.62, 112,558.80 and 45,752.86 is: 63,141.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,560.62 : 112,558.80 = 45,752.86 : x
  2. Step 2: Convert to fraction form
    81,560.62/112,558.80 = 45,752.86/x
  3. Step 3: Cross multiply
    81,560.62x = 112,558.80 × 45,752.86
  4. Step 4: Simplify right side
    81,560.62x = 5,149,887,018.17
  5. Step 5: Solve for x
    x = 5,149,887,018.17/81,560.62
  6. Step 6: Final answer
    x = 63,141.83

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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.