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Finding the Fourth Proportional to 100,044.80, 150,011.79 and 40,921.98

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Solution

The fourth proportional to 100,044.80, 150,011.79 and 40,921.98 is: 61,360.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,044.80 : 150,011.79 = 40,921.98 : x
  2. Step 2: Convert to fraction form
    100,044.80/150,011.79 = 40,921.98/x
  3. Step 3: Cross multiply
    100,044.80x = 150,011.79 × 40,921.98
  4. Step 4: Simplify right side
    100,044.80x = 6,138,779,470.14
  5. Step 5: Solve for x
    x = 6,138,779,470.14/100,044.80
  6. Step 6: Final answer
    x = 61,360.31

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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.