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Finding the Fourth Proportional to 73,980.56, 110,937.90 and 21,377.54

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Solution

The fourth proportional to 73,980.56, 110,937.90 and 21,377.54 is: 32,056.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,980.56 : 110,937.90 = 21,377.54 : x
  2. Step 2: Convert to fraction form
    73,980.56/110,937.90 = 21,377.54/x
  3. Step 3: Cross multiply
    73,980.56x = 110,937.90 × 21,377.54
  4. Step 4: Simplify right side
    73,980.56x = 2,371,579,394.77
  5. Step 5: Solve for x
    x = 2,371,579,394.77/73,980.56
  6. Step 6: Final answer
    x = 32,056.79

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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.