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Finding the Fourth Proportional to 71,052.82, 98,052.91 and 39,221.74

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Solution

The fourth proportional to 71,052.82, 98,052.91 and 39,221.74 is: 54,126.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,052.82 : 98,052.91 = 39,221.74 : x
  2. Step 2: Convert to fraction form
    71,052.82/98,052.91 = 39,221.74/x
  3. Step 3: Cross multiply
    71,052.82x = 98,052.91 × 39,221.74
  4. Step 4: Simplify right side
    71,052.82x = 3,845,805,742.26
  5. Step 5: Solve for x
    x = 3,845,805,742.26/71,052.82
  6. Step 6: Final answer
    x = 54,126.01

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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.