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Finding the Fourth Proportional to 84,335.40, 126,378 and 34,354.44

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Solution

The fourth proportional to 84,335.40, 126,378 and 34,354.44 is: 51,480.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,335.40 : 126,378 = 34,354.44 : x
  2. Step 2: Convert to fraction form
    84,335.40/126,378 = 34,354.44/x
  3. Step 3: Cross multiply
    84,335.40x = 126,378 × 34,354.44
  4. Step 4: Simplify right side
    84,335.40x = 4,341,645,418.32
  5. Step 5: Solve for x
    x = 4,341,645,418.32/84,335.40
  6. Step 6: Final answer
    x = 51,480.70

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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.