Home / 80,282.56-120,427.68-38,764.48

Finding the Fourth Proportional to 80,282.56, 120,427.68 and 38,764.48

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Solution

The fourth proportional to 80,282.56, 120,427.68 and 38,764.48 is: 58,148.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,282.56 : 120,427.68 = 38,764.48 : x
  2. Step 2: Convert to fraction form
    80,282.56/120,427.68 = 38,764.48/x
  3. Step 3: Cross multiply
    80,282.56x = 120,427.68 × 38,764.48
  4. Step 4: Simplify right side
    80,282.56x = 4,668,316,392.81
  5. Step 5: Solve for x
    x = 4,668,316,392.81/80,282.56
  6. Step 6: Final answer
    x = 58,148.57

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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.