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Finding the Fourth Proportional to 57,074.60, 78,759.06 and 31,919.24

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Solution

The fourth proportional to 57,074.60, 78,759.06 and 31,919.24 is: 44,046.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,074.60 : 78,759.06 = 31,919.24 : x
  2. Step 2: Convert to fraction form
    57,074.60/78,759.06 = 31,919.24/x
  3. Step 3: Cross multiply
    57,074.60x = 78,759.06 × 31,919.24
  4. Step 4: Simplify right side
    57,074.60x = 2,513,929,338.31
  5. Step 5: Solve for x
    x = 2,513,929,338.31/57,074.60
  6. Step 6: Final answer
    x = 44,046.38

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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.