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Finding the Fourth Proportional to 45,763.20, 68,644.80 and 40,924.80

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Solution

The fourth proportional to 45,763.20, 68,644.80 and 40,924.80 is: 61,387.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,763.20 : 68,644.80 = 40,924.80 : x
  2. Step 2: Convert to fraction form
    45,763.20/68,644.80 = 40,924.80/x
  3. Step 3: Cross multiply
    45,763.20x = 68,644.80 × 40,924.80
  4. Step 4: Simplify right side
    45,763.20x = 2,809,274,711.04
  5. Step 5: Solve for x
    x = 2,809,274,711.04/45,763.20
  6. Step 6: Final answer
    x = 61,387.20

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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.