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Finding the Fourth Proportional to 41,012.60, 61,470.90 and 18,828.11

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Solution

The fourth proportional to 41,012.60, 61,470.90 and 18,828.11 is: 28,220.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,012.60 : 61,470.90 = 18,828.11 : x
  2. Step 2: Convert to fraction form
    41,012.60/61,470.90 = 18,828.11/x
  3. Step 3: Cross multiply
    41,012.60x = 61,470.90 × 18,828.11
  4. Step 4: Simplify right side
    41,012.60x = 1,157,381,020.68
  5. Step 5: Solve for x
    x = 1,157,381,020.68/41,012.60
  6. Step 6: Final answer
    x = 28,220.14

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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.