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Finding the Fourth Proportional to 81,550.59, 112,525.57 and 45,742.11

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Solution

The fourth proportional to 81,550.59, 112,525.57 and 45,742.11 is: 63,116.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,550.59 : 112,525.57 = 45,742.11 : x
  2. Step 2: Convert to fraction form
    81,550.59/112,525.57 = 45,742.11/x
  3. Step 3: Cross multiply
    81,550.59x = 112,525.57 × 45,742.11
  4. Step 4: Simplify right side
    81,550.59x = 5,147,157,000.75
  5. Step 5: Solve for x
    x = 5,147,157,000.75/81,550.59
  6. Step 6: Final answer
    x = 63,116.12

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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.