Home / 70,747.44-106,084.64-20,821.04

Finding the Fourth Proportional to 70,747.44, 106,084.64 and 20,821.04

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Solution

The fourth proportional to 70,747.44, 106,084.64 and 20,821.04 is: 31,220.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,747.44 : 106,084.64 = 20,821.04 : x
  2. Step 2: Convert to fraction form
    70,747.44/106,084.64 = 20,821.04/x
  3. Step 3: Cross multiply
    70,747.44x = 106,084.64 × 20,821.04
  4. Step 4: Simplify right side
    70,747.44x = 2,208,792,532.83
  5. Step 5: Solve for x
    x = 2,208,792,532.83/70,747.44
  6. Step 6: Final answer
    x = 31,220.81

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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.