Home / 43,178.40-64,786.41-15,118.61

Finding the Fourth Proportional to 43,178.40, 64,786.41 and 15,118.61

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Solution

The fourth proportional to 43,178.40, 64,786.41 and 15,118.61 is: 22,684.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,178.40 : 64,786.41 = 15,118.61 : x
  2. Step 2: Convert to fraction form
    43,178.40/64,786.41 = 15,118.61/x
  3. Step 3: Cross multiply
    43,178.40x = 64,786.41 × 15,118.61
  4. Step 4: Simplify right side
    43,178.40x = 979,480,142.16
  5. Step 5: Solve for x
    x = 979,480,142.16/43,178.40
  6. Step 6: Final answer
    x = 22,684.49

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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.