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Finding the Fourth Proportional to 71,049.93, 98,049.69 and 39,218.87

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Solution

The fourth proportional to 71,049.93, 98,049.69 and 39,218.87 is: 54,122.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,049.93 : 98,049.69 = 39,218.87 : x
  2. Step 2: Convert to fraction form
    71,049.93/98,049.69 = 39,218.87/x
  3. Step 3: Cross multiply
    71,049.93x = 98,049.69 × 39,218.87
  4. Step 4: Simplify right side
    71,049.93x = 3,845,397,555.40
  5. Step 5: Solve for x
    x = 3,845,397,555.40/71,049.93
  6. Step 6: Final answer
    x = 54,122.47

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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.