Home / 84,139.71-126,206.05-34,217.88

Finding the Fourth Proportional to 84,139.71, 126,206.05 and 34,217.88

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Solution

The fourth proportional to 84,139.71, 126,206.05 and 34,217.88 is: 51,325.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,139.71 : 126,206.05 = 34,217.88 : x
  2. Step 2: Convert to fraction form
    84,139.71/126,206.05 = 34,217.88/x
  3. Step 3: Cross multiply
    84,139.71x = 126,206.05 × 34,217.88
  4. Step 4: Simplify right side
    84,139.71x = 4,318,503,474.17
  5. Step 5: Solve for x
    x = 4,318,503,474.17/84,139.71
  6. Step 6: Final answer
    x = 51,325.39

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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.