Home / 42,451.20-63,676.80-36,489.60

Finding the Fourth Proportional to 42,451.20, 63,676.80 and 36,489.60

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Solution

The fourth proportional to 42,451.20, 63,676.80 and 36,489.60 is: 54,734.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,451.20 : 63,676.80 = 36,489.60 : x
  2. Step 2: Convert to fraction form
    42,451.20/63,676.80 = 36,489.60/x
  3. Step 3: Cross multiply
    42,451.20x = 63,676.80 × 36,489.60
  4. Step 4: Simplify right side
    42,451.20x = 2,323,540,961.28
  5. Step 5: Solve for x
    x = 2,323,540,961.28/42,451.20
  6. Step 6: Final answer
    x = 54,734.40

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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.