Home / 80,087.04-120,671.15-66,352.68

Finding the Fourth Proportional to 80,087.04, 120,671.15 and 66,352.68

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Solution

The fourth proportional to 80,087.04, 120,671.15 and 66,352.68 is: 99,976.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,087.04 : 120,671.15 = 66,352.68 : x
  2. Step 2: Convert to fraction form
    80,087.04/120,671.15 = 66,352.68/x
  3. Step 3: Cross multiply
    80,087.04x = 120,671.15 × 66,352.68
  4. Step 4: Simplify right side
    80,087.04x = 8,006,853,869.42
  5. Step 5: Solve for x
    x = 8,006,853,869.42/80,087.04
  6. Step 6: Final answer
    x = 99,976.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.