Home / 80,882.10-121,323.15-51,211.80

Finding the Fourth Proportional to 80,882.10, 121,323.15 and 51,211.80

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Solution

The fourth proportional to 80,882.10, 121,323.15 and 51,211.80 is: 76,817.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,882.10 : 121,323.15 = 51,211.80 : x
  2. Step 2: Convert to fraction form
    80,882.10/121,323.15 = 51,211.80/x
  3. Step 3: Cross multiply
    80,882.10x = 121,323.15 × 51,211.80
  4. Step 4: Simplify right side
    80,882.10x = 6,213,176,893.17
  5. Step 5: Solve for x
    x = 6,213,176,893.17/80,882.10
  6. Step 6: Final answer
    x = 76,817.70

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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.