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Finding the Fourth Proportional to 80,938.48, 120,808.36 and 75,952.12

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Solution

The fourth proportional to 80,938.48, 120,808.36 and 75,952.12 is: 113,365.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,938.48 : 120,808.36 = 75,952.12 : x
  2. Step 2: Convert to fraction form
    80,938.48/120,808.36 = 75,952.12/x
  3. Step 3: Cross multiply
    80,938.48x = 120,808.36 × 75,952.12
  4. Step 4: Simplify right side
    80,938.48x = 9,175,651,055.72
  5. Step 5: Solve for x
    x = 9,175,651,055.72/80,938.48
  6. Step 6: Final answer
    x = 113,365.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.