Home / 89,508.34-123,540.38-56,781.64

Finding the Fourth Proportional to 89,508.34, 123,540.38 and 56,781.64

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Solution

The fourth proportional to 89,508.34, 123,540.38 and 56,781.64 is: 78,370.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,508.34 : 123,540.38 = 56,781.64 : x
  2. Step 2: Convert to fraction form
    89,508.34/123,540.38 = 56,781.64/x
  3. Step 3: Cross multiply
    89,508.34x = 123,540.38 × 56,781.64
  4. Step 4: Simplify right side
    89,508.34x = 7,014,825,382.62
  5. Step 5: Solve for x
    x = 7,014,825,382.62/89,508.34
  6. Step 6: Final answer
    x = 78,370.63

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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.