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Finding the Fourth Proportional to 55,335.40, 82,992.30 and 18,399.40

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Solution

The fourth proportional to 55,335.40, 82,992.30 and 18,399.40 is: 27,595.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,335.40 : 82,992.30 = 18,399.40 : x
  2. Step 2: Convert to fraction form
    55,335.40/82,992.30 = 18,399.40/x
  3. Step 3: Cross multiply
    55,335.40x = 82,992.30 × 18,399.40
  4. Step 4: Simplify right side
    55,335.40x = 1,527,008,524.62
  5. Step 5: Solve for x
    x = 1,527,008,524.62/55,335.40
  6. Step 6: Final answer
    x = 27,595.51

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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.