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Finding the Fourth Proportional to 72,251.31, 108,236.75 and 53,241.45

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Solution

The fourth proportional to 72,251.31, 108,236.75 and 53,241.45 is: 79,758.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,251.31 : 108,236.75 = 53,241.45 : x
  2. Step 2: Convert to fraction form
    72,251.31/108,236.75 = 53,241.45/x
  3. Step 3: Cross multiply
    72,251.31x = 108,236.75 × 53,241.45
  4. Step 4: Simplify right side
    72,251.31x = 5,762,681,247.08
  5. Step 5: Solve for x
    x = 5,762,681,247.08/72,251.31
  6. Step 6: Final answer
    x = 79,758.85

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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.