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Finding the Fourth Proportional to 40,699.20, 61,048.80 and 36,244.80

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Solution

The fourth proportional to 40,699.20, 61,048.80 and 36,244.80 is: 54,367.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,699.20 : 61,048.80 = 36,244.80 : x
  2. Step 2: Convert to fraction form
    40,699.20/61,048.80 = 36,244.80/x
  3. Step 3: Cross multiply
    40,699.20x = 61,048.80 × 36,244.80
  4. Step 4: Simplify right side
    40,699.20x = 2,212,701,546.24
  5. Step 5: Solve for x
    x = 2,212,701,546.24/40,699.20
  6. Step 6: Final answer
    x = 54,367.20

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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.