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Finding the Fourth Proportional to 84,103.41, 126,155.12 and 39,734.63

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Solution

The fourth proportional to 84,103.41, 126,155.12 and 39,734.63 is: 59,601.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,103.41 : 126,155.12 = 39,734.63 : x
  2. Step 2: Convert to fraction form
    84,103.41/126,155.12 = 39,734.63/x
  3. Step 3: Cross multiply
    84,103.41x = 126,155.12 × 39,734.63
  4. Step 4: Simplify right side
    84,103.41x = 5,012,726,186.36
  5. Step 5: Solve for x
    x = 5,012,726,186.36/84,103.41
  6. Step 6: Final answer
    x = 59,601.94

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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.