Home / 84,546.28-126,805.26-28,380.10

Finding the Fourth Proportional to 84,546.28, 126,805.26 and 28,380.10

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Solution

The fourth proportional to 84,546.28, 126,805.26 and 28,380.10 is: 42,565.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,546.28 : 126,805.26 = 28,380.10 : x
  2. Step 2: Convert to fraction form
    84,546.28/126,805.26 = 28,380.10/x
  3. Step 3: Cross multiply
    84,546.28x = 126,805.26 × 28,380.10
  4. Step 4: Simplify right side
    84,546.28x = 3,598,745,959.33
  5. Step 5: Solve for x
    x = 3,598,745,959.33/84,546.28
  6. Step 6: Final answer
    x = 42,565.40

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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.