Home / 66,961.28-92,371.66-39,721.52

Finding the Fourth Proportional to 66,961.28, 92,371.66 and 39,721.52

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Solution

The fourth proportional to 66,961.28, 92,371.66 and 39,721.52 is: 54,794.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,961.28 : 92,371.66 = 39,721.52 : x
  2. Step 2: Convert to fraction form
    66,961.28/92,371.66 = 39,721.52/x
  3. Step 3: Cross multiply
    66,961.28x = 92,371.66 × 39,721.52
  4. Step 4: Simplify right side
    66,961.28x = 3,669,142,740.12
  5. Step 5: Solve for x
    x = 3,669,142,740.12/66,961.28
  6. Step 6: Final answer
    x = 54,794.99

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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.