Home / 80,934.46-121,456.23-28,344.40

Finding the Fourth Proportional to 80,934.46, 121,456.23 and 28,344.40

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Solution

The fourth proportional to 80,934.46, 121,456.23 and 28,344.40 is: 42,535.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,934.46 : 121,456.23 = 28,344.40 : x
  2. Step 2: Convert to fraction form
    80,934.46/121,456.23 = 28,344.40/x
  3. Step 3: Cross multiply
    80,934.46x = 121,456.23 × 28,344.40
  4. Step 4: Simplify right side
    80,934.46x = 3,442,603,965.61
  5. Step 5: Solve for x
    x = 3,442,603,965.61/80,934.46
  6. Step 6: Final answer
    x = 42,535.70

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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.