Home / 67,928-93,749.28-38,120

Finding the Fourth Proportional to 67,928, 93,749.28 and 38,120

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Solution

The fourth proportional to 67,928, 93,749.28 and 38,120 is: 52,610.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,928 : 93,749.28 = 38,120 : x
  2. Step 2: Convert to fraction form
    67,928/93,749.28 = 38,120/x
  3. Step 3: Cross multiply
    67,928x = 93,749.28 × 38,120
  4. Step 4: Simplify right side
    67,928x = 3,573,722,553.60
  5. Step 5: Solve for x
    x = 3,573,722,553.60/67,928
  6. Step 6: Final answer
    x = 52,610.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.