Home / 70,713.24-106,070.85-18,121.38

Finding the Fourth Proportional to 70,713.24, 106,070.85 and 18,121.38

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Solution

The fourth proportional to 70,713.24, 106,070.85 and 18,121.38 is: 27,182.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,713.24 : 106,070.85 = 18,121.38 : x
  2. Step 2: Convert to fraction form
    70,713.24/106,070.85 = 18,121.38/x
  3. Step 3: Cross multiply
    70,713.24x = 106,070.85 × 18,121.38
  4. Step 4: Simplify right side
    70,713.24x = 1,922,150,179.77
  5. Step 5: Solve for x
    x = 1,922,150,179.77/70,713.24
  6. Step 6: Final answer
    x = 27,182.32

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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.