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Finding the Fourth Proportional to 30,481.74, 42,079.18 and 22,930.94

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Solution

The fourth proportional to 30,481.74, 42,079.18 and 22,930.94 is: 31,655.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,481.74 : 42,079.18 = 22,930.94 : x
  2. Step 2: Convert to fraction form
    30,481.74/42,079.18 = 22,930.94/x
  3. Step 3: Cross multiply
    30,481.74x = 42,079.18 × 22,930.94
  4. Step 4: Simplify right side
    30,481.74x = 964,915,199.70
  5. Step 5: Solve for x
    x = 964,915,199.70/30,481.74
  6. Step 6: Final answer
    x = 31,655.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.