Home / 75,721.38-113,585.31-28,332.06

Finding the Fourth Proportional to 75,721.38, 113,585.31 and 28,332.06

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Solution

The fourth proportional to 75,721.38, 113,585.31 and 28,332.06 is: 42,499.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,721.38 : 113,585.31 = 28,332.06 : x
  2. Step 2: Convert to fraction form
    75,721.38/113,585.31 = 28,332.06/x
  3. Step 3: Cross multiply
    75,721.38x = 113,585.31 × 28,332.06
  4. Step 4: Simplify right side
    75,721.38x = 3,218,105,818.04
  5. Step 5: Solve for x
    x = 3,218,105,818.04/75,721.38
  6. Step 6: Final answer
    x = 42,499.30

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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.