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Finding the Fourth Proportional to 70,099.70, 96,734.21 and 39,882.20

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Solution

The fourth proportional to 70,099.70, 96,734.21 and 39,882.20 is: 55,035.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,099.70 : 96,734.21 = 39,882.20 : x
  2. Step 2: Convert to fraction form
    70,099.70/96,734.21 = 39,882.20/x
  3. Step 3: Cross multiply
    70,099.70x = 96,734.21 × 39,882.20
  4. Step 4: Simplify right side
    70,099.70x = 3,857,972,426.98
  5. Step 5: Solve for x
    x = 3,857,972,426.98/70,099.70
  6. Step 6: Final answer
    x = 55,035.51

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1.5x scale

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.