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Finding the Fourth Proportional to 55,993.56, 83,998.25 and 20,929.88

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Solution

The fourth proportional to 55,993.56, 83,998.25 and 20,929.88 is: 31,397.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,993.56 : 83,998.25 = 20,929.88 : x
  2. Step 2: Convert to fraction form
    55,993.56/83,998.25 = 20,929.88/x
  3. Step 3: Cross multiply
    55,993.56x = 83,998.25 × 20,929.88
  4. Step 4: Simplify right side
    55,993.56x = 1,758,072,768.07
  5. Step 5: Solve for x
    x = 1,758,072,768.07/55,993.56
  6. Step 6: Final answer
    x = 31,397.77

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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.