Home / 87,579.25-120,859.85-47,835.25

Finding the Fourth Proportional to 87,579.25, 120,859.85 and 47,835.25

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Solution

The fourth proportional to 87,579.25, 120,859.85 and 47,835.25 is: 66,012.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,579.25 : 120,859.85 = 47,835.25 : x
  2. Step 2: Convert to fraction form
    87,579.25/120,859.85 = 47,835.25/x
  3. Step 3: Cross multiply
    87,579.25x = 120,859.85 × 47,835.25
  4. Step 4: Simplify right side
    87,579.25x = 5,781,361,139.71
  5. Step 5: Solve for x
    x = 5,781,361,139.71/87,579.25
  6. Step 6: Final answer
    x = 66,012.91

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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.