Home / 84,616.39-126,930.96-28,456.66

Finding the Fourth Proportional to 84,616.39, 126,930.96 and 28,456.66

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Solution

The fourth proportional to 84,616.39, 126,930.96 and 28,456.66 is: 42,687.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,616.39 : 126,930.96 = 28,456.66 : x
  2. Step 2: Convert to fraction form
    84,616.39/126,930.96 = 28,456.66/x
  3. Step 3: Cross multiply
    84,616.39x = 126,930.96 × 28,456.66
  4. Step 4: Simplify right side
    84,616.39x = 3,612,031,172.19
  5. Step 5: Solve for x
    x = 3,612,031,172.19/84,616.39
  6. Step 6: Final answer
    x = 42,687.13

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1.5x scale

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.