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Finding the Fourth Proportional to 83,481.98, 115,188.10 and 49,475.50

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Solution

The fourth proportional to 83,481.98, 115,188.10 and 49,475.50 is: 68,266.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,481.98 : 115,188.10 = 49,475.50 : x
  2. Step 2: Convert to fraction form
    83,481.98/115,188.10 = 49,475.50/x
  3. Step 3: Cross multiply
    83,481.98x = 115,188.10 × 49,475.50
  4. Step 4: Simplify right side
    83,481.98x = 5,698,988,841.55
  5. Step 5: Solve for x
    x = 5,698,988,841.55/83,481.98
  6. Step 6: Final answer
    x = 68,266.10

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1.5x scale

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.