Home / 87,951.90-121,307.21-55,255.82

Finding the Fourth Proportional to 87,951.90, 121,307.21 and 55,255.82

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Solution

The fourth proportional to 87,951.90, 121,307.21 and 55,255.82 is: 76,211.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,951.90 : 121,307.21 = 55,255.82 : x
  2. Step 2: Convert to fraction form
    87,951.90/121,307.21 = 55,255.82/x
  3. Step 3: Cross multiply
    87,951.90x = 121,307.21 × 55,255.82
  4. Step 4: Simplify right side
    87,951.90x = 6,702,929,360.46
  5. Step 5: Solve for x
    x = 6,702,929,360.46/87,951.90
  6. Step 6: Final answer
    x = 76,211.31

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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.