Home / 80,934.60-121,272.30-53,200.20

Finding the Fourth Proportional to 80,934.60, 121,272.30 and 53,200.20

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Solution

The fourth proportional to 80,934.60, 121,272.30 and 53,200.20 is: 79,715.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,934.60 : 121,272.30 = 53,200.20 : x
  2. Step 2: Convert to fraction form
    80,934.60/121,272.30 = 53,200.20/x
  3. Step 3: Cross multiply
    80,934.60x = 121,272.30 × 53,200.20
  4. Step 4: Simplify right side
    80,934.60x = 6,451,710,614.46
  5. Step 5: Solve for x
    x = 6,451,710,614.46/80,934.60
  6. Step 6: Final answer
    x = 79,715.11

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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.