Home / 87,865.40-121,254.83-47,579.17

Finding the Fourth Proportional to 87,865.40, 121,254.83 and 47,579.17

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Solution

The fourth proportional to 87,865.40, 121,254.83 and 47,579.17 is: 65,659.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,865.40 : 121,254.83 = 47,579.17 : x
  2. Step 2: Convert to fraction form
    87,865.40/121,254.83 = 47,579.17/x
  3. Step 3: Cross multiply
    87,865.40x = 121,254.83 × 47,579.17
  4. Step 4: Simplify right side
    87,865.40x = 5,769,203,793.97
  5. Step 5: Solve for x
    x = 5,769,203,793.97/87,865.40
  6. Step 6: Final answer
    x = 65,659.56

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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.