Home / 81,505.22-112,470.68-45,690.36

Finding the Fourth Proportional to 81,505.22, 112,470.68 and 45,690.36

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Solution

The fourth proportional to 81,505.22, 112,470.68 and 45,690.36 is: 63,049.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,505.22 : 112,470.68 = 45,690.36 : x
  2. Step 2: Convert to fraction form
    81,505.22/112,470.68 = 45,690.36/x
  3. Step 3: Cross multiply
    81,505.22x = 112,470.68 × 45,690.36
  4. Step 4: Simplify right side
    81,505.22x = 5,138,825,630.19
  5. Step 5: Solve for x
    x = 5,138,825,630.19/81,505.22
  6. Step 6: Final answer
    x = 63,049.04

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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.