Home / 80,747.69-121,141.54-38,659.75

Finding the Fourth Proportional to 80,747.69, 121,141.54 and 38,659.75

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Solution

The fourth proportional to 80,747.69, 121,141.54 and 38,659.75 is: 57,999.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,747.69 : 121,141.54 = 38,659.75 : x
  2. Step 2: Convert to fraction form
    80,747.69/121,141.54 = 38,659.75/x
  3. Step 3: Cross multiply
    80,747.69x = 121,141.54 × 38,659.75
  4. Step 4: Simplify right side
    80,747.69x = 4,683,301,396.49
  5. Step 5: Solve for x
    x = 4,683,301,396.49/80,747.69
  6. Step 6: Final answer
    x = 57,999.20

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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.