Home / 80,872.02-111,680.37-76,454.28

Finding the Fourth Proportional to 80,872.02, 111,680.37 and 76,454.28

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Solution

The fourth proportional to 80,872.02, 111,680.37 and 76,454.28 is: 105,579.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,872.02 : 111,680.37 = 76,454.28 : x
  2. Step 2: Convert to fraction form
    80,872.02/111,680.37 = 76,454.28/x
  3. Step 3: Cross multiply
    80,872.02x = 111,680.37 × 76,454.28
  4. Step 4: Simplify right side
    80,872.02x = 8,538,442,278.48
  5. Step 5: Solve for x
    x = 8,538,442,278.48/80,872.02
  6. Step 6: Final answer
    x = 105,579.68

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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.