Home / 80,079.47-120,191.66-42,671.15

Finding the Fourth Proportional to 80,079.47, 120,191.66 and 42,671.15

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Solution

The fourth proportional to 80,079.47, 120,191.66 and 42,671.15 is: 64,045.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,079.47 : 120,191.66 = 42,671.15 : x
  2. Step 2: Convert to fraction form
    80,079.47/120,191.66 = 42,671.15/x
  3. Step 3: Cross multiply
    80,079.47x = 120,191.66 × 42,671.15
  4. Step 4: Simplify right side
    80,079.47x = 5,128,715,538.29
  5. Step 5: Solve for x
    x = 5,128,715,538.29/80,079.47
  6. Step 6: Final answer
    x = 64,045.33

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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.