Home / 80,837.18-121,202.96-38,715.89

Finding the Fourth Proportional to 80,837.18, 121,202.96 and 38,715.89

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Solution

The fourth proportional to 80,837.18, 121,202.96 and 38,715.89 is: 58,048.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,837.18 : 121,202.96 = 38,715.89 : x
  2. Step 2: Convert to fraction form
    80,837.18/121,202.96 = 38,715.89/x
  3. Step 3: Cross multiply
    80,837.18x = 121,202.96 × 38,715.89
  4. Step 4: Simplify right side
    80,837.18x = 4,692,479,667.44
  5. Step 5: Solve for x
    x = 4,692,479,667.44/80,837.18
  6. Step 6: Final answer
    x = 58,048.54

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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.