Home / 81,720.91-112,785.38-45,910.96

Finding the Fourth Proportional to 81,720.91, 112,785.38 and 45,910.96

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Solution

The fourth proportional to 81,720.91, 112,785.38 and 45,910.96 is: 63,363.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,720.91 : 112,785.38 = 45,910.96 : x
  2. Step 2: Convert to fraction form
    81,720.91/112,785.38 = 45,910.96/x
  3. Step 3: Cross multiply
    81,720.91x = 112,785.38 × 45,910.96
  4. Step 4: Simplify right side
    81,720.91x = 5,178,084,902.58
  5. Step 5: Solve for x
    x = 5,178,084,902.58/81,720.91
  6. Step 6: Final answer
    x = 63,363.04

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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.