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Finding the Fourth Proportional to 74,272.80, 111,401.30 and 20,963.46

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Solution

The fourth proportional to 74,272.80, 111,401.30 and 20,963.46 is: 31,442.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,272.80 : 111,401.30 = 20,963.46 : x
  2. Step 2: Convert to fraction form
    74,272.80/111,401.30 = 20,963.46/x
  3. Step 3: Cross multiply
    74,272.80x = 111,401.30 × 20,963.46
  4. Step 4: Simplify right side
    74,272.80x = 2,335,356,591.68
  5. Step 5: Solve for x
    x = 2,335,356,591.68/74,272.80
  6. Step 6: Final answer
    x = 31,442.96

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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.