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Finding the Fourth Proportional to 74,761.80, 112,143.12 and 22,171.68

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Solution

The fourth proportional to 74,761.80, 112,143.12 and 22,171.68 is: 33,257.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,761.80 : 112,143.12 = 22,171.68 : x
  2. Step 2: Convert to fraction form
    74,761.80/112,143.12 = 22,171.68/x
  3. Step 3: Cross multiply
    74,761.80x = 112,143.12 × 22,171.68
  4. Step 4: Simplify right side
    74,761.80x = 2,486,401,370.84
  5. Step 5: Solve for x
    x = 2,486,401,370.84/74,761.80
  6. Step 6: Final answer
    x = 33,257.64

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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.