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Finding the Fourth Proportional to 85,238.88, 117,630.20 and 47,515.52

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Solution

The fourth proportional to 85,238.88, 117,630.20 and 47,515.52 is: 65,571.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,238.88 : 117,630.20 = 47,515.52 : x
  2. Step 2: Convert to fraction form
    85,238.88/117,630.20 = 47,515.52/x
  3. Step 3: Cross multiply
    85,238.88x = 117,630.20 × 47,515.52
  4. Step 4: Simplify right side
    85,238.88x = 5,589,260,120.70
  5. Step 5: Solve for x
    x = 5,589,260,120.70/85,238.88
  6. Step 6: Final answer
    x = 65,571.72

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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.