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Finding the Fourth Proportional to 71,419.52, 98,559.76 and 39,588.96

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Solution

The fourth proportional to 71,419.52, 98,559.76 and 39,588.96 is: 54,633.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,419.52 : 98,559.76 = 39,588.96 : x
  2. Step 2: Convert to fraction form
    71,419.52/98,559.76 = 39,588.96/x
  3. Step 3: Cross multiply
    71,419.52x = 98,559.76 × 39,588.96
  4. Step 4: Simplify right side
    71,419.52x = 3,901,878,396.25
  5. Step 5: Solve for x
    x = 3,901,878,396.25/71,419.52
  6. Step 6: Final answer
    x = 54,633.22

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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.