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Finding the Fourth Proportional to 84,604, 126,906.88 and 34,671.28

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Solution

The fourth proportional to 84,604, 126,906.88 and 34,671.28 is: 52,007.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,604 : 126,906.88 = 34,671.28 : x
  2. Step 2: Convert to fraction form
    84,604/126,906.88 = 34,671.28/x
  3. Step 3: Cross multiply
    84,604x = 126,906.88 × 34,671.28
  4. Step 4: Simplify right side
    84,604x = 4,400,023,970.41
  5. Step 5: Solve for x
    x = 4,400,023,970.41/84,604
  6. Step 6: Final answer
    x = 52,007.28

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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.