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Finding the Fourth Proportional to 73,574.80, 110,363.20 and 20,984.28

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Solution

The fourth proportional to 73,574.80, 110,363.20 and 20,984.28 is: 31,476.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,574.80 : 110,363.20 = 20,984.28 : x
  2. Step 2: Convert to fraction form
    73,574.80/110,363.20 = 20,984.28/x
  3. Step 3: Cross multiply
    73,574.80x = 110,363.20 × 20,984.28
  4. Step 4: Simplify right side
    73,574.80x = 2,315,892,290.50
  5. Step 5: Solve for x
    x = 2,315,892,290.50/73,574.80
  6. Step 6: Final answer
    x = 31,476.71

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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.