Home / 80,841.24-111,520.80-54,019.71

Finding the Fourth Proportional to 80,841.24, 111,520.80 and 54,019.71

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Solution

The fourth proportional to 80,841.24, 111,520.80 and 54,019.71 is: 74,520.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,841.24 : 111,520.80 = 54,019.71 : x
  2. Step 2: Convert to fraction form
    80,841.24/111,520.80 = 54,019.71/x
  3. Step 3: Cross multiply
    80,841.24x = 111,520.80 × 54,019.71
  4. Step 4: Simplify right side
    80,841.24x = 6,024,321,274.97
  5. Step 5: Solve for x
    x = 6,024,321,274.97/80,841.24
  6. Step 6: Final answer
    x = 74,520.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.