Home / 87,345.38-120,536.63-49,619.63

Finding the Fourth Proportional to 87,345.38, 120,536.63 and 49,619.63

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Solution

The fourth proportional to 87,345.38, 120,536.63 and 49,619.63 is: 68,475.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,345.38 : 120,536.63 = 49,619.63 : x
  2. Step 2: Convert to fraction form
    87,345.38/120,536.63 = 49,619.63/x
  3. Step 3: Cross multiply
    87,345.38x = 120,536.63 × 49,619.63
  4. Step 4: Simplify right side
    87,345.38x = 5,980,982,131.27
  5. Step 5: Solve for x
    x = 5,980,982,131.27/87,345.38
  6. Step 6: Final answer
    x = 68,475.09

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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.