Home / 75,131.28-103,819.32-53,876.88

Finding the Fourth Proportional to 75,131.28, 103,819.32 and 53,876.88

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Solution

The fourth proportional to 75,131.28, 103,819.32 and 53,876.88 is: 74,449.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,131.28 : 103,819.32 = 53,876.88 : x
  2. Step 2: Convert to fraction form
    75,131.28/103,819.32 = 53,876.88/x
  3. Step 3: Cross multiply
    75,131.28x = 103,819.32 × 53,876.88
  4. Step 4: Simplify right side
    75,131.28x = 5,593,461,045.32
  5. Step 5: Solve for x
    x = 5,593,461,045.32/75,131.28
  6. Step 6: Final answer
    x = 74,449.16

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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.