Home / 70,660.18-105,993.92-18,070.12

Finding the Fourth Proportional to 70,660.18, 105,993.92 and 18,070.12

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Solution

The fourth proportional to 70,660.18, 105,993.92 and 18,070.12 is: 27,106.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,660.18 : 105,993.92 = 18,070.12 : x
  2. Step 2: Convert to fraction form
    70,660.18/105,993.92 = 18,070.12/x
  3. Step 3: Cross multiply
    70,660.18x = 105,993.92 × 18,070.12
  4. Step 4: Simplify right side
    70,660.18x = 1,915,322,853.67
  5. Step 5: Solve for x
    x = 1,915,322,853.67/70,660.18
  6. Step 6: Final answer
    x = 27,106.11

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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.