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Finding the Fourth Proportional to 71,885.80, 99,202.79 and 41,689.02

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Solution

The fourth proportional to 71,885.80, 99,202.79 and 41,689.02 is: 57,531.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,885.80 : 99,202.79 = 41,689.02 : x
  2. Step 2: Convert to fraction form
    71,885.80/99,202.79 = 41,689.02/x
  3. Step 3: Cross multiply
    71,885.80x = 99,202.79 × 41,689.02
  4. Step 4: Simplify right side
    71,885.80x = 4,135,667,200.59
  5. Step 5: Solve for x
    x = 4,135,667,200.59/71,885.80
  6. Step 6: Final answer
    x = 57,531.07

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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.