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Finding the Fourth Proportional to 80,501.58, 120,744.17 and 21,343.23

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Solution

The fourth proportional to 80,501.58, 120,744.17 and 21,343.23 is: 32,012.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,501.58 : 120,744.17 = 21,343.23 : x
  2. Step 2: Convert to fraction form
    80,501.58/120,744.17 = 21,343.23/x
  3. Step 3: Cross multiply
    80,501.58x = 120,744.17 × 21,343.23
  4. Step 4: Simplify right side
    80,501.58x = 2,577,070,564.79
  5. Step 5: Solve for x
    x = 2,577,070,564.79/80,501.58
  6. Step 6: Final answer
    x = 32,012.67

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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.