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Finding the Fourth Proportional to 71,085.84, 98,097.92 and 39,254.48

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Solution

The fourth proportional to 71,085.84, 98,097.92 and 39,254.48 is: 54,170.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,085.84 : 98,097.92 = 39,254.48 : x
  2. Step 2: Convert to fraction form
    71,085.84/98,097.92 = 39,254.48/x
  3. Step 3: Cross multiply
    71,085.84x = 98,097.92 × 39,254.48
  4. Step 4: Simplify right side
    71,085.84x = 3,850,782,838.68
  5. Step 5: Solve for x
    x = 3,850,782,838.68/71,085.84
  6. Step 6: Final answer
    x = 54,170.88

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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.