Home / 72,080.28-108,043.88-42,512.04

Finding the Fourth Proportional to 72,080.28, 108,043.88 and 42,512.04

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Solution

The fourth proportional to 72,080.28, 108,043.88 and 42,512.04 is: 63,722.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,080.28 : 108,043.88 = 42,512.04 : x
  2. Step 2: Convert to fraction form
    72,080.28/108,043.88 = 42,512.04/x
  3. Step 3: Cross multiply
    72,080.28x = 108,043.88 × 42,512.04
  4. Step 4: Simplify right side
    72,080.28x = 4,593,165,535.76
  5. Step 5: Solve for x
    x = 4,593,165,535.76/72,080.28
  6. Step 6: Final answer
    x = 63,722.91

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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.