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Finding the Fourth Proportional to 71,201.70, 98,251.70 and 39,369.92

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Solution

The fourth proportional to 71,201.70, 98,251.70 and 39,369.92 is: 54,326.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,201.70 : 98,251.70 = 39,369.92 : x
  2. Step 2: Convert to fraction form
    71,201.70/98,251.70 = 39,369.92/x
  3. Step 3: Cross multiply
    71,201.70x = 98,251.70 × 39,369.92
  4. Step 4: Simplify right side
    71,201.70x = 3,868,160,880.76
  5. Step 5: Solve for x
    x = 3,868,160,880.76/71,201.70
  6. Step 6: Final answer
    x = 54,326.81

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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.