Home / 70,696.12-106,040.82-20,774.20

Finding the Fourth Proportional to 70,696.12, 106,040.82 and 20,774.20

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Solution

The fourth proportional to 70,696.12, 106,040.82 and 20,774.20 is: 31,160.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,696.12 : 106,040.82 = 20,774.20 : x
  2. Step 2: Convert to fraction form
    70,696.12/106,040.82 = 20,774.20/x
  3. Step 3: Cross multiply
    70,696.12x = 106,040.82 × 20,774.20
  4. Step 4: Simplify right side
    70,696.12x = 2,202,913,202.84
  5. Step 5: Solve for x
    x = 2,202,913,202.84/70,696.12
  6. Step 6: Final answer
    x = 31,160.31

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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.