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Finding the Fourth Proportional to 70,052.72, 96,675.53 and 39,840.80

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Solution

The fourth proportional to 70,052.72, 96,675.53 and 39,840.80 is: 54,981.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,052.72 : 96,675.53 = 39,840.80 : x
  2. Step 2: Convert to fraction form
    70,052.72/96,675.53 = 39,840.80/x
  3. Step 3: Cross multiply
    70,052.72x = 96,675.53 × 39,840.80
  4. Step 4: Simplify right side
    70,052.72x = 3,851,629,773.04
  5. Step 5: Solve for x
    x = 3,851,629,773.04/70,052.72
  6. Step 6: Final answer
    x = 54,981.88

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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.