Home / 87,865.85-121,254.65-47,579.61

Finding the Fourth Proportional to 87,865.85, 121,254.65 and 47,579.61

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Solution

The fourth proportional to 87,865.85, 121,254.65 and 47,579.61 is: 65,659.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,865.85 : 121,254.65 = 47,579.61 : x
  2. Step 2: Convert to fraction form
    87,865.85/121,254.65 = 47,579.61/x
  3. Step 3: Cross multiply
    87,865.85x = 121,254.65 × 47,579.61
  4. Step 4: Simplify right side
    87,865.85x = 5,769,248,567.25
  5. Step 5: Solve for x
    x = 5,769,248,567.25/87,865.85
  6. Step 6: Final answer
    x = 65,659.74

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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.