Home / 71,121.06-98,146.86-40,912.20

Finding the Fourth Proportional to 71,121.06, 98,146.86 and 40,912.20

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Solution

The fourth proportional to 71,121.06, 98,146.86 and 40,912.20 is: 56,458.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,121.06 : 98,146.86 = 40,912.20 : x
  2. Step 2: Convert to fraction form
    71,121.06/98,146.86 = 40,912.20/x
  3. Step 3: Cross multiply
    71,121.06x = 98,146.86 × 40,912.20
  4. Step 4: Simplify right side
    71,121.06x = 4,015,403,965.69
  5. Step 5: Solve for x
    x = 4,015,403,965.69/71,121.06
  6. Step 6: Final answer
    x = 56,458.72

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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.