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Finding the Fourth Proportional to 71,049.83, 98,048.78 and 39,218.74

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Solution

The fourth proportional to 71,049.83, 98,048.78 and 39,218.74 is: 54,121.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,049.83 : 98,048.78 = 39,218.74 : x
  2. Step 2: Convert to fraction form
    71,049.83/98,048.78 = 39,218.74/x
  3. Step 3: Cross multiply
    71,049.83x = 98,048.78 × 39,218.74
  4. Step 4: Simplify right side
    71,049.83x = 3,845,349,610.14
  5. Step 5: Solve for x
    x = 3,845,349,610.14/71,049.83
  6. Step 6: Final answer
    x = 54,121.87

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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.