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Finding the Fourth Proportional to 71,524.78, 98,704.26 and 39,693.70

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Solution

The fourth proportional to 71,524.78, 98,704.26 and 39,693.70 is: 54,777.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,524.78 : 98,704.26 = 39,693.70 : x
  2. Step 2: Convert to fraction form
    71,524.78/98,704.26 = 39,693.70/x
  3. Step 3: Cross multiply
    71,524.78x = 98,704.26 × 39,693.70
  4. Step 4: Simplify right side
    71,524.78x = 3,917,937,285.16
  5. Step 5: Solve for x
    x = 3,917,937,285.16/71,524.78
  6. Step 6: Final answer
    x = 54,777.34

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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.