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Finding the Fourth Proportional to 73,512.42, 110,268.69 and 20,921.91

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Solution

The fourth proportional to 73,512.42, 110,268.69 and 20,921.91 is: 31,382.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,512.42 : 110,268.69 = 20,921.91 : x
  2. Step 2: Convert to fraction form
    73,512.42/110,268.69 = 20,921.91/x
  3. Step 3: Cross multiply
    73,512.42x = 110,268.69 × 20,921.91
  4. Step 4: Simplify right side
    73,512.42x = 2,307,031,608.00
  5. Step 5: Solve for x
    x = 2,307,031,608.00/73,512.42
  6. Step 6: Final answer
    x = 31,382.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.