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Finding the Fourth Proportional to 40,425.80, 60,638.70 and 40,166.60

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Solution

The fourth proportional to 40,425.80, 60,638.70 and 40,166.60 is: 60,249.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,425.80 : 60,638.70 = 40,166.60 : x
  2. Step 2: Convert to fraction form
    40,425.80/60,638.70 = 40,166.60/x
  3. Step 3: Cross multiply
    40,425.80x = 60,638.70 × 40,166.60
  4. Step 4: Simplify right side
    40,425.80x = 2,435,650,407.42
  5. Step 5: Solve for x
    x = 2,435,650,407.42/40,425.80
  6. Step 6: Final answer
    x = 60,249.90

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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.