Home / 73,178.11-109,767.17-20,587.57

Finding the Fourth Proportional to 73,178.11, 109,767.17 and 20,587.57

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Solution

The fourth proportional to 73,178.11, 109,767.17 and 20,587.57 is: 30,881.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,178.11 : 109,767.17 = 20,587.57 : x
  2. Step 2: Convert to fraction form
    73,178.11/109,767.17 = 20,587.57/x
  3. Step 3: Cross multiply
    73,178.11x = 109,767.17 × 20,587.57
  4. Step 4: Simplify right side
    73,178.11x = 2,259,839,296.08
  5. Step 5: Solve for x
    x = 2,259,839,296.08/73,178.11
  6. Step 6: Final answer
    x = 30,881.36

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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.