Home / 85,220.20-117,612.19-63,672.56

Finding the Fourth Proportional to 85,220.20, 117,612.19 and 63,672.56

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Solution

The fourth proportional to 85,220.20, 117,612.19 and 63,672.56 is: 87,874.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,220.20 : 117,612.19 = 63,672.56 : x
  2. Step 2: Convert to fraction form
    85,220.20/117,612.19 = 63,672.56/x
  3. Step 3: Cross multiply
    85,220.20x = 117,612.19 × 63,672.56
  4. Step 4: Simplify right side
    85,220.20x = 7,488,668,736.76
  5. Step 5: Solve for x
    x = 7,488,668,736.76/85,220.20
  6. Step 6: Final answer
    x = 87,874.34

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1.5x scale

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.