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Finding the Fourth Proportional to 100,042.55, 150,008.42 and 40,919.73

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Solution

The fourth proportional to 100,042.55, 150,008.42 and 40,919.73 is: 61,356.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,042.55 : 150,008.42 = 40,919.73 : x
  2. Step 2: Convert to fraction form
    100,042.55/150,008.42 = 40,919.73/x
  3. Step 3: Cross multiply
    100,042.55x = 150,008.42 × 40,919.73
  4. Step 4: Simplify right side
    100,042.55x = 6,138,303,839.53
  5. Step 5: Solve for x
    x = 6,138,303,839.53/100,042.55
  6. Step 6: Final answer
    x = 61,356.93

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1.5x scale

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.