Home / 80,484.19-120,728.82-38,368.87

Finding the Fourth Proportional to 80,484.19, 120,728.82 and 38,368.87

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Solution

The fourth proportional to 80,484.19, 120,728.82 and 38,368.87 is: 57,554.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,484.19 : 120,728.82 = 38,368.87 : x
  2. Step 2: Convert to fraction form
    80,484.19/120,728.82 = 38,368.87/x
  3. Step 3: Cross multiply
    80,484.19x = 120,728.82 × 38,368.87
  4. Step 4: Simplify right side
    80,484.19x = 4,632,228,399.83
  5. Step 5: Solve for x
    x = 4,632,228,399.83/80,484.19
  6. Step 6: Final answer
    x = 57,554.51

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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.