Home / 87,782.67-121,141.85-51,959.61

Finding the Fourth Proportional to 87,782.67, 121,141.85 and 51,959.61

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Solution

The fourth proportional to 87,782.67, 121,141.85 and 51,959.61 is: 71,705.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,782.67 : 121,141.85 = 51,959.61 : x
  2. Step 2: Convert to fraction form
    87,782.67/121,141.85 = 51,959.61/x
  3. Step 3: Cross multiply
    87,782.67x = 121,141.85 × 51,959.61
  4. Step 4: Simplify right side
    87,782.67x = 6,294,483,020.88
  5. Step 5: Solve for x
    x = 6,294,483,020.88/87,782.67
  6. Step 6: Final answer
    x = 71,705.30

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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.