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Finding the Fourth Proportional to 80,240.52, 120,376.98 and 55,292.52

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Solution

The fourth proportional to 80,240.52, 120,376.98 and 55,292.52 is: 82,949.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,240.52 : 120,376.98 = 55,292.52 : x
  2. Step 2: Convert to fraction form
    80,240.52/120,376.98 = 55,292.52/x
  3. Step 3: Cross multiply
    80,240.52x = 120,376.98 × 55,292.52
  4. Step 4: Simplify right side
    80,240.52x = 6,655,946,574.19
  5. Step 5: Solve for x
    x = 6,655,946,574.19/80,240.52
  6. Step 6: Final answer
    x = 82,949.94

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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.