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Finding the Fourth Proportional to 40,506.70, 60,760.05 and 28,040.80

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Solution

The fourth proportional to 40,506.70, 60,760.05 and 28,040.80 is: 42,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,506.70 : 60,760.05 = 28,040.80 : x
  2. Step 2: Convert to fraction form
    40,506.70/60,760.05 = 28,040.80/x
  3. Step 3: Cross multiply
    40,506.70x = 60,760.05 × 28,040.80
  4. Step 4: Simplify right side
    40,506.70x = 1,703,760,410.04
  5. Step 5: Solve for x
    x = 1,703,760,410.04/40,506.70
  6. Step 6: Final answer
    x = 42,061.20

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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.