Home / 75,330.64-103,959.54-45,120.88

Finding the Fourth Proportional to 75,330.64, 103,959.54 and 45,120.88

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Solution

The fourth proportional to 75,330.64, 103,959.54 and 45,120.88 is: 62,268.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,330.64 : 103,959.54 = 45,120.88 : x
  2. Step 2: Convert to fraction form
    75,330.64/103,959.54 = 45,120.88/x
  3. Step 3: Cross multiply
    75,330.64x = 103,959.54 × 45,120.88
  4. Step 4: Simplify right side
    75,330.64x = 4,690,745,929.20
  5. Step 5: Solve for x
    x = 4,690,745,929.20/75,330.64
  6. Step 6: Final answer
    x = 62,268.77

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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.