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Finding the Fourth Proportional to 44,718.80, 67,078.20 and 20,142.80

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Solution

The fourth proportional to 44,718.80, 67,078.20 and 20,142.80 is: 30,214.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,718.80 : 67,078.20 = 20,142.80 : x
  2. Step 2: Convert to fraction form
    44,718.80/67,078.20 = 20,142.80/x
  3. Step 3: Cross multiply
    44,718.80x = 67,078.20 × 20,142.80
  4. Step 4: Simplify right side
    44,718.80x = 1,351,142,766.96
  5. Step 5: Solve for x
    x = 1,351,142,766.96/44,718.80
  6. Step 6: Final answer
    x = 30,214.20

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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.