Home / 84,540.61-126,806.56-28,381.15

Finding the Fourth Proportional to 84,540.61, 126,806.56 and 28,381.15

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Solution

The fourth proportional to 84,540.61, 126,806.56 and 28,381.15 is: 42,570.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,540.61 : 126,806.56 = 28,381.15 : x
  2. Step 2: Convert to fraction form
    84,540.61/126,806.56 = 28,381.15/x
  3. Step 3: Cross multiply
    84,540.61x = 126,806.56 × 28,381.15
  4. Step 4: Simplify right side
    84,540.61x = 3,598,916,000.34
  5. Step 5: Solve for x
    x = 3,598,916,000.34/84,540.61
  6. Step 6: Final answer
    x = 42,570.26

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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.