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Finding the Fourth Proportional to 71,591.16, 98,794.08 and 39,759.78

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Solution

The fourth proportional to 71,591.16, 98,794.08 and 39,759.78 is: 54,867.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,591.16 : 98,794.08 = 39,759.78 : x
  2. Step 2: Convert to fraction form
    71,591.16/98,794.08 = 39,759.78/x
  3. Step 3: Cross multiply
    71,591.16x = 98,794.08 × 39,759.78
  4. Step 4: Simplify right side
    71,591.16x = 3,928,030,886.10
  5. Step 5: Solve for x
    x = 3,928,030,886.10/71,591.16
  6. Step 6: Final answer
    x = 54,867.54

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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.