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Finding the Fourth Proportional to 40,240.80, 60,361.20 and 29,872.80

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Solution

The fourth proportional to 40,240.80, 60,361.20 and 29,872.80 is: 44,809.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,240.80 : 60,361.20 = 29,872.80 : x
  2. Step 2: Convert to fraction form
    40,240.80/60,361.20 = 29,872.80/x
  3. Step 3: Cross multiply
    40,240.80x = 60,361.20 × 29,872.80
  4. Step 4: Simplify right side
    40,240.80x = 1,803,158,055.36
  5. Step 5: Solve for x
    x = 1,803,158,055.36/40,240.80
  6. Step 6: Final answer
    x = 44,809.20

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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.