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Finding the Fourth Proportional to 69,720.75, 104,960.48 and 63,520.61

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Solution

The fourth proportional to 69,720.75, 104,960.48 and 63,520.61 is: 95,626.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,720.75 : 104,960.48 = 63,520.61 : x
  2. Step 2: Convert to fraction form
    69,720.75/104,960.48 = 63,520.61/x
  3. Step 3: Cross multiply
    69,720.75x = 104,960.48 × 63,520.61
  4. Step 4: Simplify right side
    69,720.75x = 6,667,152,873.09
  5. Step 5: Solve for x
    x = 6,667,152,873.09/69,720.75
  6. Step 6: Final answer
    x = 95,626.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.