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Finding the Fourth Proportional to 70,682.82, 106,021.80 and 18,092.76

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Solution

The fourth proportional to 70,682.82, 106,021.80 and 18,092.76 is: 27,138.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,682.82 : 106,021.80 = 18,092.76 : x
  2. Step 2: Convert to fraction form
    70,682.82/106,021.80 = 18,092.76/x
  3. Step 3: Cross multiply
    70,682.82x = 106,021.80 × 18,092.76
  4. Step 4: Simplify right side
    70,682.82x = 1,918,226,982.17
  5. Step 5: Solve for x
    x = 1,918,226,982.17/70,682.82
  6. Step 6: Final answer
    x = 27,138.52

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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.