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Finding the Fourth Proportional to 76,873, 106,086.36 and 43,339

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Solution

The fourth proportional to 76,873, 106,086.36 and 43,339 is: 59,808.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,873 : 106,086.36 = 43,339 : x
  2. Step 2: Convert to fraction form
    76,873/106,086.36 = 43,339/x
  3. Step 3: Cross multiply
    76,873x = 106,086.36 × 43,339
  4. Step 4: Simplify right side
    76,873x = 4,597,676,756.04
  5. Step 5: Solve for x
    x = 4,597,676,756.04/76,873
  6. Step 6: Final answer
    x = 59,808.73

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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.