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Finding the Fourth Proportional to 71,449.70, 98,595.78 and 39,617.42

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Solution

The fourth proportional to 71,449.70, 98,595.78 and 39,617.42 is: 54,669.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,449.70 : 98,595.78 = 39,617.42 : x
  2. Step 2: Convert to fraction form
    71,449.70/98,595.78 = 39,617.42/x
  3. Step 3: Cross multiply
    71,449.70x = 98,595.78 × 39,617.42
  4. Step 4: Simplify right side
    71,449.70x = 3,906,110,426.49
  5. Step 5: Solve for x
    x = 3,906,110,426.49/71,449.70
  6. Step 6: Final answer
    x = 54,669.37

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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.