Home / 80,363.32-120,544.63-20,392.36

Finding the Fourth Proportional to 80,363.32, 120,544.63 and 20,392.36

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Solution

The fourth proportional to 80,363.32, 120,544.63 and 20,392.36 is: 30,588.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,363.32 : 120,544.63 = 20,392.36 : x
  2. Step 2: Convert to fraction form
    80,363.32/120,544.63 = 20,392.36/x
  3. Step 3: Cross multiply
    80,363.32x = 120,544.63 × 20,392.36
  4. Step 4: Simplify right side
    80,363.32x = 2,458,189,491.03
  5. Step 5: Solve for x
    x = 2,458,189,491.03/80,363.32
  6. Step 6: Final answer
    x = 30,588.45

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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.