Home / 87,865.23-121,253.83-47,579.11

Finding the Fourth Proportional to 87,865.23, 121,253.83 and 47,579.11

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Solution

The fourth proportional to 87,865.23, 121,253.83 and 47,579.11 is: 65,659.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,865.23 : 121,253.83 = 47,579.11 : x
  2. Step 2: Convert to fraction form
    87,865.23/121,253.83 = 47,579.11/x
  3. Step 3: Cross multiply
    87,865.23x = 121,253.83 × 47,579.11
  4. Step 4: Simplify right side
    87,865.23x = 5,769,149,315.49
  5. Step 5: Solve for x
    x = 5,769,149,315.49/87,865.23
  6. Step 6: Final answer
    x = 65,659.07

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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.