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Finding the Fourth Proportional to 84,462.80, 126,560.84 and 68,590.59

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Solution

The fourth proportional to 84,462.80, 126,560.84 and 68,590.59 is: 102,777.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,462.80 : 126,560.84 = 68,590.59 : x
  2. Step 2: Convert to fraction form
    84,462.80/126,560.84 = 68,590.59/x
  3. Step 3: Cross multiply
    84,462.80x = 126,560.84 × 68,590.59
  4. Step 4: Simplify right side
    84,462.80x = 8,680,882,940.53
  5. Step 5: Solve for x
    x = 8,680,882,940.53/84,462.80
  6. Step 6: Final answer
    x = 102,777.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.