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Finding the Fourth Proportional to 71,044.70, 98,041.50 and 39,213.38

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Solution

The fourth proportional to 71,044.70, 98,041.50 and 39,213.38 is: 54,114.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,044.70 : 98,041.50 = 39,213.38 : x
  2. Step 2: Convert to fraction form
    71,044.70/98,041.50 = 39,213.38/x
  3. Step 3: Cross multiply
    71,044.70x = 98,041.50 × 39,213.38
  4. Step 4: Simplify right side
    71,044.70x = 3,844,538,595.27
  5. Step 5: Solve for x
    x = 3,844,538,595.27/71,044.70
  6. Step 6: Final answer
    x = 54,114.36

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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.