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Finding the Fourth Proportional to 67,124.40, 100,600.20 and 40,801.20

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Solution

The fourth proportional to 67,124.40, 100,600.20 and 40,801.20 is: 61,149.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,124.40 : 100,600.20 = 40,801.20 : x
  2. Step 2: Convert to fraction form
    67,124.40/100,600.20 = 40,801.20/x
  3. Step 3: Cross multiply
    67,124.40x = 100,600.20 × 40,801.20
  4. Step 4: Simplify right side
    67,124.40x = 4,104,608,880.24
  5. Step 5: Solve for x
    x = 4,104,608,880.24/67,124.40
  6. Step 6: Final answer
    x = 61,149.28

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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.