Home / 80,233.19-120,325.14-55,432.61

Finding the Fourth Proportional to 80,233.19, 120,325.14 and 55,432.61

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Solution

The fourth proportional to 80,233.19, 120,325.14 and 55,432.61 is: 83,131.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,233.19 : 120,325.14 = 55,432.61 : x
  2. Step 2: Convert to fraction form
    80,233.19/120,325.14 = 55,432.61/x
  3. Step 3: Cross multiply
    80,233.19x = 120,325.14 × 55,432.61
  4. Step 4: Simplify right side
    80,233.19x = 6,669,935,957.19
  5. Step 5: Solve for x
    x = 6,669,935,957.19/80,233.19
  6. Step 6: Final answer
    x = 83,131.89

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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.