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Finding the Fourth Proportional to 72,996.88, 109,489.92 and 43,601.44

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Solution

The fourth proportional to 72,996.88, 109,489.92 and 43,601.44 is: 65,398.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,996.88 : 109,489.92 = 43,601.44 : x
  2. Step 2: Convert to fraction form
    72,996.88/109,489.92 = 43,601.44/x
  3. Step 3: Cross multiply
    72,996.88x = 109,489.92 × 43,601.44
  4. Step 4: Simplify right side
    72,996.88x = 4,773,918,177.48
  5. Step 5: Solve for x
    x = 4,773,918,177.48/72,996.88
  6. Step 6: Final answer
    x = 65,398.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.