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Finding the Fourth Proportional to 100,051.20, 150,076.80 and 40,929.30

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Solution

The fourth proportional to 100,051.20, 150,076.80 and 40,929.30 is: 61,393.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,051.20 : 150,076.80 = 40,929.30 : x
  2. Step 2: Convert to fraction form
    100,051.20/150,076.80 = 40,929.30/x
  3. Step 3: Cross multiply
    100,051.20x = 150,076.80 × 40,929.30
  4. Step 4: Simplify right side
    100,051.20x = 6,142,538,370.24
  5. Step 5: Solve for x
    x = 6,142,538,370.24/100,051.20
  6. Step 6: Final answer
    x = 61,393.95

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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.