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Finding the Fourth Proportional to 71,581.86, 98,767.26 and 43,286.94

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Solution

The fourth proportional to 71,581.86, 98,767.26 and 43,286.94 is: 59,726.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,581.86 : 98,767.26 = 43,286.94 : x
  2. Step 2: Convert to fraction form
    71,581.86/98,767.26 = 43,286.94/x
  3. Step 3: Cross multiply
    71,581.86x = 98,767.26 × 43,286.94
  4. Step 4: Simplify right side
    71,581.86x = 4,275,332,457.58
  5. Step 5: Solve for x
    x = 4,275,332,457.58/71,581.86
  6. Step 6: Final answer
    x = 59,726.48

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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.