Home / 80,909.34-121,253.17-51,347.91

Finding the Fourth Proportional to 80,909.34, 121,253.17 and 51,347.91

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Solution

The fourth proportional to 80,909.34, 121,253.17 and 51,347.91 is: 76,951.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,909.34 : 121,253.17 = 51,347.91 : x
  2. Step 2: Convert to fraction form
    80,909.34/121,253.17 = 51,347.91/x
  3. Step 3: Cross multiply
    80,909.34x = 121,253.17 × 51,347.91
  4. Step 4: Simplify right side
    80,909.34x = 6,226,096,860.37
  5. Step 5: Solve for x
    x = 6,226,096,860.37/80,909.34
  6. Step 6: Final answer
    x = 76,951.52

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1.5x scale

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.