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Finding the Fourth Proportional to 70,169.28, 96,801.12 and 40,344

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Solution

The fourth proportional to 70,169.28, 96,801.12 and 40,344 is: 55,656.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,169.28 : 96,801.12 = 40,344 : x
  2. Step 2: Convert to fraction form
    70,169.28/96,801.12 = 40,344/x
  3. Step 3: Cross multiply
    70,169.28x = 96,801.12 × 40,344
  4. Step 4: Simplify right side
    70,169.28x = 3,905,344,385.28
  5. Step 5: Solve for x
    x = 3,905,344,385.28/70,169.28
  6. Step 6: Final answer
    x = 55,656.04

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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.