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Finding the Fourth Proportional to 40,961.80, 61,446.09 and 10,980.29

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Solution

The fourth proportional to 40,961.80, 61,446.09 and 10,980.29 is: 16,471.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,961.80 : 61,446.09 = 10,980.29 : x
  2. Step 2: Convert to fraction form
    40,961.80/61,446.09 = 10,980.29/x
  3. Step 3: Cross multiply
    40,961.80x = 61,446.09 × 10,980.29
  4. Step 4: Simplify right side
    40,961.80x = 674,696,082.36
  5. Step 5: Solve for x
    x = 674,696,082.36/40,961.80
  6. Step 6: Final answer
    x = 16,471.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.