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Finding the Fourth Proportional to 81,350.88, 112,263.12 and 45,540.90

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Solution

The fourth proportional to 81,350.88, 112,263.12 and 45,540.90 is: 62,845.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,350.88 : 112,263.12 = 45,540.90 : x
  2. Step 2: Convert to fraction form
    81,350.88/112,263.12 = 45,540.90/x
  3. Step 3: Cross multiply
    81,350.88x = 112,263.12 × 45,540.90
  4. Step 4: Simplify right side
    81,350.88x = 5,112,563,521.61
  5. Step 5: Solve for x
    x = 5,112,563,521.61/81,350.88
  6. Step 6: Final answer
    x = 62,845.83

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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.