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Finding the Fourth Proportional to 70,099.95, 96,734.55 and 39,882.45

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Solution

The fourth proportional to 70,099.95, 96,734.55 and 39,882.45 is: 55,035.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,099.95 : 96,734.55 = 39,882.45 : x
  2. Step 2: Convert to fraction form
    70,099.95/96,734.55 = 39,882.45/x
  3. Step 3: Cross multiply
    70,099.95x = 96,734.55 × 39,882.45
  4. Step 4: Simplify right side
    70,099.95x = 3,858,010,369.97
  5. Step 5: Solve for x
    x = 3,858,010,369.97/70,099.95
  6. Step 6: Final answer
    x = 55,035.85

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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.