Home / 87,866.64-121,255.25-47,579.40

Finding the Fourth Proportional to 87,866.64, 121,255.25 and 47,579.40

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Solution

The fourth proportional to 87,866.64, 121,255.25 and 47,579.40 is: 65,659.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,866.64 : 121,255.25 = 47,579.40 : x
  2. Step 2: Convert to fraction form
    87,866.64/121,255.25 = 47,579.40/x
  3. Step 3: Cross multiply
    87,866.64x = 121,255.25 × 47,579.40
  4. Step 4: Simplify right side
    87,866.64x = 5,769,251,803.95
  5. Step 5: Solve for x
    x = 5,769,251,803.95/87,866.64
  6. Step 6: Final answer
    x = 65,659.18

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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.