Home / 42,640.20-63,587.25-40,311

Finding the Fourth Proportional to 42,640.20, 63,587.25 and 40,311

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Solution

The fourth proportional to 42,640.20, 63,587.25 and 40,311 is: 60,113.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,640.20 : 63,587.25 = 40,311 : x
  2. Step 2: Convert to fraction form
    42,640.20/63,587.25 = 40,311/x
  3. Step 3: Cross multiply
    42,640.20x = 63,587.25 × 40,311
  4. Step 4: Simplify right side
    42,640.20x = 2,563,265,634.75
  5. Step 5: Solve for x
    x = 2,563,265,634.75/42,640.20
  6. Step 6: Final answer
    x = 60,113.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.