Home / 73,981.56-110,939.40-21,378.54

Finding the Fourth Proportional to 73,981.56, 110,939.40 and 21,378.54

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Solution

The fourth proportional to 73,981.56, 110,939.40 and 21,378.54 is: 32,058.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,981.56 : 110,939.40 = 21,378.54 : x
  2. Step 2: Convert to fraction form
    73,981.56/110,939.40 = 21,378.54/x
  3. Step 3: Cross multiply
    73,981.56x = 110,939.40 × 21,378.54
  4. Step 4: Simplify right side
    73,981.56x = 2,371,722,400.48
  5. Step 5: Solve for x
    x = 2,371,722,400.48/73,981.56
  6. Step 6: Final answer
    x = 32,058.29

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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.