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Finding the Fourth Proportional to 73,561.60, 110,309.68 and 20,959.20

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Solution

The fourth proportional to 73,561.60, 110,309.68 and 20,959.20 is: 31,429.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,561.60 : 110,309.68 = 20,959.20 : x
  2. Step 2: Convert to fraction form
    73,561.60/110,309.68 = 20,959.20/x
  3. Step 3: Cross multiply
    73,561.60x = 110,309.68 × 20,959.20
  4. Step 4: Simplify right side
    73,561.60x = 2,312,002,645.06
  5. Step 5: Solve for x
    x = 2,312,002,645.06/73,561.60
  6. Step 6: Final answer
    x = 31,429.48

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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.