Home / 71,856.72-107,759.16-30,306.96

Finding the Fourth Proportional to 71,856.72, 107,759.16 and 30,306.96

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Solution

The fourth proportional to 71,856.72, 107,759.16 and 30,306.96 is: 45,449.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,856.72 : 107,759.16 = 30,306.96 : x
  2. Step 2: Convert to fraction form
    71,856.72/107,759.16 = 30,306.96/x
  3. Step 3: Cross multiply
    71,856.72x = 107,759.16 × 30,306.96
  4. Step 4: Simplify right side
    71,856.72x = 3,265,852,551.75
  5. Step 5: Solve for x
    x = 3,265,852,551.75/71,856.72
  6. Step 6: Final answer
    x = 45,449.51

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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.