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Finding the Fourth Proportional to 71,188.50, 98,237.02 and 40,974.79

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Solution

The fourth proportional to 71,188.50, 98,237.02 and 40,974.79 is: 56,543.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,188.50 : 98,237.02 = 40,974.79 : x
  2. Step 2: Convert to fraction form
    71,188.50/98,237.02 = 40,974.79/x
  3. Step 3: Cross multiply
    71,188.50x = 98,237.02 × 40,974.79
  4. Step 4: Simplify right side
    71,188.50x = 4,025,241,264.73
  5. Step 5: Solve for x
    x = 4,025,241,264.73/71,188.50
  6. Step 6: Final answer
    x = 56,543.42

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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.