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Finding the Fourth Proportional to 71,563.52, 98,750.44 and 39,728.96

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Solution

The fourth proportional to 71,563.52, 98,750.44 and 39,728.96 is: 54,821.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,563.52 : 98,750.44 = 39,728.96 : x
  2. Step 2: Convert to fraction form
    71,563.52/98,750.44 = 39,728.96/x
  3. Step 3: Cross multiply
    71,563.52x = 98,750.44 × 39,728.96
  4. Step 4: Simplify right side
    71,563.52x = 3,923,252,280.74
  5. Step 5: Solve for x
    x = 3,923,252,280.74/71,563.52
  6. Step 6: Final answer
    x = 54,821.96

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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.