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Finding the Fourth Proportional to 84,522.78, 126,808.20 and 42,352.02

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Solution

The fourth proportional to 84,522.78, 126,808.20 and 42,352.02 is: 63,540.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,522.78 : 126,808.20 = 42,352.02 : x
  2. Step 2: Convert to fraction form
    84,522.78/126,808.20 = 42,352.02/x
  3. Step 3: Cross multiply
    84,522.78x = 126,808.20 × 42,352.02
  4. Step 4: Simplify right side
    84,522.78x = 5,370,583,422.56
  5. Step 5: Solve for x
    x = 5,370,583,422.56/84,522.78
  6. Step 6: Final answer
    x = 63,540.07

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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.