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Finding the Fourth Proportional to 80,909.45, 111,706.92 and 52,241.93

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Solution

The fourth proportional to 80,909.45, 111,706.92 and 52,241.93 is: 72,127.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,909.45 : 111,706.92 = 52,241.93 : x
  2. Step 2: Convert to fraction form
    80,909.45/111,706.92 = 52,241.93/x
  3. Step 3: Cross multiply
    80,909.45x = 111,706.92 × 52,241.93
  4. Step 4: Simplify right side
    80,909.45x = 5,835,784,536.62
  5. Step 5: Solve for x
    x = 5,835,784,536.62/80,909.45
  6. Step 6: Final answer
    x = 72,127.36

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1.5x scale

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.