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Finding the Fourth Proportional to 56,581.40, 84,872.25 and 17,138.86

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Solution

The fourth proportional to 56,581.40, 84,872.25 and 17,138.86 is: 25,708.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,581.40 : 84,872.25 = 17,138.86 : x
  2. Step 2: Convert to fraction form
    56,581.40/84,872.25 = 17,138.86/x
  3. Step 3: Cross multiply
    56,581.40x = 84,872.25 × 17,138.86
  4. Step 4: Simplify right side
    56,581.40x = 1,454,613,398.45
  5. Step 5: Solve for x
    x = 1,454,613,398.45/56,581.40
  6. Step 6: Final answer
    x = 25,708.33

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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.