Home / 80,487.15-120,691.85-47,218.02

Finding the Fourth Proportional to 80,487.15, 120,691.85 and 47,218.02

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Solution

The fourth proportional to 80,487.15, 120,691.85 and 47,218.02 is: 70,804.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,487.15 : 120,691.85 = 47,218.02 : x
  2. Step 2: Convert to fraction form
    80,487.15/120,691.85 = 47,218.02/x
  3. Step 3: Cross multiply
    80,487.15x = 120,691.85 × 47,218.02
  4. Step 4: Simplify right side
    80,487.15x = 5,698,829,951.05
  5. Step 5: Solve for x
    x = 5,698,829,951.05/80,487.15
  6. Step 6: Final answer
    x = 70,804.22

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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.