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Finding the Fourth Proportional to 73,022.20, 100,770.64 and 39,488.20

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Solution

The fourth proportional to 73,022.20, 100,770.64 and 39,488.20 is: 54,493.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,022.20 : 100,770.64 = 39,488.20 : x
  2. Step 2: Convert to fraction form
    73,022.20/100,770.64 = 39,488.20/x
  3. Step 3: Cross multiply
    73,022.20x = 100,770.64 × 39,488.20
  4. Step 4: Simplify right side
    73,022.20x = 3,979,251,186.45
  5. Step 5: Solve for x
    x = 3,979,251,186.45/73,022.20
  6. Step 6: Final answer
    x = 54,493.72

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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.