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Finding the Fourth Proportional to 71,101.65, 98,111.89 and 39,268.65

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Solution

The fourth proportional to 71,101.65, 98,111.89 and 39,268.65 is: 54,186.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,101.65 : 98,111.89 = 39,268.65 : x
  2. Step 2: Convert to fraction form
    71,101.65/98,111.89 = 39,268.65/x
  3. Step 3: Cross multiply
    71,101.65x = 98,111.89 × 39,268.65
  4. Step 4: Simplify right side
    71,101.65x = 3,852,721,469.25
  5. Step 5: Solve for x
    x = 3,852,721,469.25/71,101.65
  6. Step 6: Final answer
    x = 54,186.10

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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.