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Finding the Fourth Proportional to 71,888.67, 99,206.42 and 41,691.51

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Solution

The fourth proportional to 71,888.67, 99,206.42 and 41,691.51 is: 57,534.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,888.67 : 99,206.42 = 41,691.51 : x
  2. Step 2: Convert to fraction form
    71,888.67/99,206.42 = 41,691.51/x
  3. Step 3: Cross multiply
    71,888.67x = 99,206.42 × 41,691.51
  4. Step 4: Simplify right side
    71,888.67x = 4,136,065,243.04
  5. Step 5: Solve for x
    x = 4,136,065,243.04/71,888.67
  6. Step 6: Final answer
    x = 57,534.31

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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.