Home / 43,138.14-64,707.20-19,764.57

Finding the Fourth Proportional to 43,138.14, 64,707.20 and 19,764.57

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Solution

The fourth proportional to 43,138.14, 64,707.20 and 19,764.57 is: 29,646.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,138.14 : 64,707.20 = 19,764.57 : x
  2. Step 2: Convert to fraction form
    43,138.14/64,707.20 = 19,764.57/x
  3. Step 3: Cross multiply
    43,138.14x = 64,707.20 × 19,764.57
  4. Step 4: Simplify right side
    43,138.14x = 1,278,909,885.08
  5. Step 5: Solve for x
    x = 1,278,909,885.08/43,138.14
  6. Step 6: Final answer
    x = 29,646.85

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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.