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Finding the Fourth Proportional to 70,676.62, 106,014.84 and 18,086.12

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Solution

The fourth proportional to 70,676.62, 106,014.84 and 18,086.12 is: 27,129.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,676.62 : 106,014.84 = 18,086.12 : x
  2. Step 2: Convert to fraction form
    70,676.62/106,014.84 = 18,086.12/x
  3. Step 3: Cross multiply
    70,676.62x = 106,014.84 × 18,086.12
  4. Step 4: Simplify right side
    70,676.62x = 1,917,397,118.02
  5. Step 5: Solve for x
    x = 1,917,397,118.02/70,676.62
  6. Step 6: Final answer
    x = 27,129.16

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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.