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Finding the Fourth Proportional to 70,149.31, 96,736.88 and 43,286.11

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Solution

The fourth proportional to 70,149.31, 96,736.88 and 43,286.11 is: 59,692.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,149.31 : 96,736.88 = 43,286.11 : x
  2. Step 2: Convert to fraction form
    70,149.31/96,736.88 = 43,286.11/x
  3. Step 3: Cross multiply
    70,149.31x = 96,736.88 × 43,286.11
  4. Step 4: Simplify right side
    70,149.31x = 4,187,363,639.25
  5. Step 5: Solve for x
    x = 4,187,363,639.25/70,149.31
  6. Step 6: Final answer
    x = 59,692.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.