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Finding the Fourth Proportional to 71,154.21, 98,199.03 and 39,329.31

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Solution

The fourth proportional to 71,154.21, 98,199.03 and 39,329.31 is: 54,277.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,154.21 : 98,199.03 = 39,329.31 : x
  2. Step 2: Convert to fraction form
    71,154.21/98,199.03 = 39,329.31/x
  3. Step 3: Cross multiply
    71,154.21x = 98,199.03 × 39,329.31
  4. Step 4: Simplify right side
    71,154.21x = 3,862,100,092.57
  5. Step 5: Solve for x
    x = 3,862,100,092.57/71,154.21
  6. Step 6: Final answer
    x = 54,277.89

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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.