Home / 80,931.96-121,452.48-28,341.90

Finding the Fourth Proportional to 80,931.96, 121,452.48 and 28,341.90

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Solution

The fourth proportional to 80,931.96, 121,452.48 and 28,341.90 is: 42,531.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,931.96 : 121,452.48 = 28,341.90 : x
  2. Step 2: Convert to fraction form
    80,931.96/121,452.48 = 28,341.90/x
  3. Step 3: Cross multiply
    80,931.96x = 121,452.48 × 28,341.90
  4. Step 4: Simplify right side
    80,931.96x = 3,442,194,042.91
  5. Step 5: Solve for x
    x = 3,442,194,042.91/80,931.96
  6. Step 6: Final answer
    x = 42,531.95

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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.