Home / 80,328.24-120,487.50-21,163.82

Finding the Fourth Proportional to 80,328.24, 120,487.50 and 21,163.82

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Solution

The fourth proportional to 80,328.24, 120,487.50 and 21,163.82 is: 31,744.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,328.24 : 120,487.50 = 21,163.82 : x
  2. Step 2: Convert to fraction form
    80,328.24/120,487.50 = 21,163.82/x
  3. Step 3: Cross multiply
    80,328.24x = 120,487.50 × 21,163.82
  4. Step 4: Simplify right side
    80,328.24x = 2,549,975,159.81
  5. Step 5: Solve for x
    x = 2,549,975,159.81/80,328.24
  6. Step 6: Final answer
    x = 31,744.44

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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.