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Finding the Fourth Proportional to 74,220.92, 102,424.92 and 40,229.72

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Solution

The fourth proportional to 74,220.92, 102,424.92 and 40,229.72 is: 55,517.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,220.92 : 102,424.92 = 40,229.72 : x
  2. Step 2: Convert to fraction form
    74,220.92/102,424.92 = 40,229.72/x
  3. Step 3: Cross multiply
    74,220.92x = 102,424.92 × 40,229.72
  4. Step 4: Simplify right side
    74,220.92x = 4,120,525,852.62
  5. Step 5: Solve for x
    x = 4,120,525,852.62/74,220.92
  6. Step 6: Final answer
    x = 55,517.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.