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Finding the Fourth Proportional to 55,833.30, 83,721.15 and 20,754.90

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Solution

The fourth proportional to 55,833.30, 83,721.15 and 20,754.90 is: 31,121.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,833.30 : 83,721.15 = 20,754.90 : x
  2. Step 2: Convert to fraction form
    55,833.30/83,721.15 = 20,754.90/x
  3. Step 3: Cross multiply
    55,833.30x = 83,721.15 × 20,754.90
  4. Step 4: Simplify right side
    55,833.30x = 1,737,624,096.14
  5. Step 5: Solve for x
    x = 1,737,624,096.14/55,833.30
  6. Step 6: Final answer
    x = 31,121.64

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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.