Home / 70,981.08-106,471.62-18,390.57

Finding the Fourth Proportional to 70,981.08, 106,471.62 and 18,390.57

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Solution

The fourth proportional to 70,981.08, 106,471.62 and 18,390.57 is: 27,585.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,981.08 : 106,471.62 = 18,390.57 : x
  2. Step 2: Convert to fraction form
    70,981.08/106,471.62 = 18,390.57/x
  3. Step 3: Cross multiply
    70,981.08x = 106,471.62 × 18,390.57
  4. Step 4: Simplify right side
    70,981.08x = 1,958,073,780.62
  5. Step 5: Solve for x
    x = 1,958,073,780.62/70,981.08
  6. Step 6: Final answer
    x = 27,585.86

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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.