Home / 87,864.38-121,253.85-47,579.06

Finding the Fourth Proportional to 87,864.38, 121,253.85 and 47,579.06

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Solution

The fourth proportional to 87,864.38, 121,253.85 and 47,579.06 is: 65,659.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,864.38 : 121,253.85 = 47,579.06 : x
  2. Step 2: Convert to fraction form
    87,864.38/121,253.85 = 47,579.06/x
  3. Step 3: Cross multiply
    87,864.38x = 121,253.85 × 47,579.06
  4. Step 4: Simplify right side
    87,864.38x = 5,769,144,204.38
  5. Step 5: Solve for x
    x = 5,769,144,204.38/87,864.38
  6. Step 6: Final answer
    x = 65,659.65

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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.