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Finding the Fourth Proportional to 71,167.80, 98,210.16 and 39,338.04

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Solution

The fourth proportional to 71,167.80, 98,210.16 and 39,338.04 is: 54,285.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,167.80 : 98,210.16 = 39,338.04 : x
  2. Step 2: Convert to fraction form
    71,167.80/98,210.16 = 39,338.04/x
  3. Step 3: Cross multiply
    71,167.80x = 98,210.16 × 39,338.04
  4. Step 4: Simplify right side
    71,167.80x = 3,863,395,202.49
  5. Step 5: Solve for x
    x = 3,863,395,202.49/71,167.80
  6. Step 6: Final answer
    x = 54,285.72

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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.