Home / 42,642.75-63,880.29-40,215.18

Finding the Fourth Proportional to 42,642.75, 63,880.29 and 40,215.18

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Solution

The fourth proportional to 42,642.75, 63,880.29 and 40,215.18 is: 60,243.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,642.75 : 63,880.29 = 40,215.18 : x
  2. Step 2: Convert to fraction form
    42,642.75/63,880.29 = 40,215.18/x
  3. Step 3: Cross multiply
    42,642.75x = 63,880.29 × 40,215.18
  4. Step 4: Simplify right side
    42,642.75x = 2,568,957,360.80
  5. Step 5: Solve for x
    x = 2,568,957,360.80/42,642.75
  6. Step 6: Final answer
    x = 60,243.71

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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.