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Finding the Fourth Proportional to 70,920.97, 106,396.57 and 35,401.39

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Solution

The fourth proportional to 70,920.97, 106,396.57 and 35,401.39 is: 53,109.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,920.97 : 106,396.57 = 35,401.39 : x
  2. Step 2: Convert to fraction form
    70,920.97/106,396.57 = 35,401.39/x
  3. Step 3: Cross multiply
    70,920.97x = 106,396.57 × 35,401.39
  4. Step 4: Simplify right side
    70,920.97x = 3,766,586,247.49
  5. Step 5: Solve for x
    x = 3,766,586,247.49/70,920.97
  6. Step 6: Final answer
    x = 53,109.63

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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.