Home / 84,344.10-126,531.54-28,178.88

Finding the Fourth Proportional to 84,344.10, 126,531.54 and 28,178.88

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Solution

The fourth proportional to 84,344.10, 126,531.54 and 28,178.88 is: 42,273.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,344.10 : 126,531.54 = 28,178.88 : x
  2. Step 2: Convert to fraction form
    84,344.10/126,531.54 = 28,178.88/x
  3. Step 3: Cross multiply
    84,344.10x = 126,531.54 × 28,178.88
  4. Step 4: Simplify right side
    84,344.10x = 3,565,517,081.88
  5. Step 5: Solve for x
    x = 3,565,517,081.88/84,344.10
  6. Step 6: Final answer
    x = 42,273.46

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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.