Home / 81,717.32-112,767.29-45,418.59

Finding the Fourth Proportional to 81,717.32, 112,767.29 and 45,418.59

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Solution

The fourth proportional to 81,717.32, 112,767.29 and 45,418.59 is: 62,676.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,717.32 : 112,767.29 = 45,418.59 : x
  2. Step 2: Convert to fraction form
    81,717.32/112,767.29 = 45,418.59/x
  3. Step 3: Cross multiply
    81,717.32x = 112,767.29 × 45,418.59
  4. Step 4: Simplify right side
    81,717.32x = 5,121,731,141.55
  5. Step 5: Solve for x
    x = 5,121,731,141.55/81,717.32
  6. Step 6: Final answer
    x = 62,676.20

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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.