Home / 80,268.62-120,421.17-42,808.95

Finding the Fourth Proportional to 80,268.62, 120,421.17 and 42,808.95

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Solution

The fourth proportional to 80,268.62, 120,421.17 and 42,808.95 is: 64,223.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,268.62 : 120,421.17 = 42,808.95 : x
  2. Step 2: Convert to fraction form
    80,268.62/120,421.17 = 42,808.95/x
  3. Step 3: Cross multiply
    80,268.62x = 120,421.17 × 42,808.95
  4. Step 4: Simplify right side
    80,268.62x = 5,155,103,845.47
  5. Step 5: Solve for x
    x = 5,155,103,845.47/80,268.62
  6. Step 6: Final answer
    x = 64,223.16

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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.