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Finding the Fourth Proportional to 84,605, 126,908.38 and 34,672.28

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Solution

The fourth proportional to 84,605, 126,908.38 and 34,672.28 is: 52,008.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,605 : 126,908.38 = 34,672.28 : x
  2. Step 2: Convert to fraction form
    84,605/126,908.38 = 34,672.28/x
  3. Step 3: Cross multiply
    84,605x = 126,908.38 × 34,672.28
  4. Step 4: Simplify right side
    84,605x = 4,400,202,885.71
  5. Step 5: Solve for x
    x = 4,400,202,885.71/84,605
  6. Step 6: Final answer
    x = 52,008.78

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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.