Home / 80,829.38-121,244.28-28,238.85

Finding the Fourth Proportional to 80,829.38, 121,244.28 and 28,238.85

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Solution

The fourth proportional to 80,829.38, 121,244.28 and 28,238.85 is: 42,358.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,829.38 : 121,244.28 = 28,238.85 : x
  2. Step 2: Convert to fraction form
    80,829.38/121,244.28 = 28,238.85/x
  3. Step 3: Cross multiply
    80,829.38x = 121,244.28 × 28,238.85
  4. Step 4: Simplify right side
    80,829.38x = 3,423,799,036.28
  5. Step 5: Solve for x
    x = 3,423,799,036.28/80,829.38
  6. Step 6: Final answer
    x = 42,358.35

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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.