Home / 81,631.74-112,645.62-45,814.86

Finding the Fourth Proportional to 81,631.74, 112,645.62 and 45,814.86

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Solution

The fourth proportional to 81,631.74, 112,645.62 and 45,814.86 is: 63,221.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,631.74 : 112,645.62 = 45,814.86 : x
  2. Step 2: Convert to fraction form
    81,631.74/112,645.62 = 45,814.86/x
  3. Step 3: Cross multiply
    81,631.74x = 112,645.62 × 45,814.86
  4. Step 4: Simplify right side
    81,631.74x = 5,160,843,309.91
  5. Step 5: Solve for x
    x = 5,160,843,309.91/81,631.74
  6. Step 6: Final answer
    x = 63,221.04

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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.