Home / 66,630.08-91,949.60-38,335.20

Finding the Fourth Proportional to 66,630.08, 91,949.60 and 38,335.20

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Solution

The fourth proportional to 66,630.08, 91,949.60 and 38,335.20 is: 52,902.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,630.08 : 91,949.60 = 38,335.20 : x
  2. Step 2: Convert to fraction form
    66,630.08/91,949.60 = 38,335.20/x
  3. Step 3: Cross multiply
    66,630.08x = 91,949.60 × 38,335.20
  4. Step 4: Simplify right side
    66,630.08x = 3,524,906,305.92
  5. Step 5: Solve for x
    x = 3,524,906,305.92/66,630.08
  6. Step 6: Final answer
    x = 52,902.63

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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.