Home / 40,738.71-56,114.26-28,781.29

Finding the Fourth Proportional to 40,738.71, 56,114.26 and 28,781.29

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Solution

The fourth proportional to 40,738.71, 56,114.26 and 28,781.29 is: 39,643.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,738.71 : 56,114.26 = 28,781.29 : x
  2. Step 2: Convert to fraction form
    40,738.71/56,114.26 = 28,781.29/x
  3. Step 3: Cross multiply
    40,738.71x = 56,114.26 × 28,781.29
  4. Step 4: Simplify right side
    40,738.71x = 1,615,040,790.20
  5. Step 5: Solve for x
    x = 1,615,040,790.20/40,738.71
  6. Step 6: Final answer
    x = 39,643.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.