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Finding the Fourth Proportional to 73,718.16, 110,581.02 and 21,135.48

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Solution

The fourth proportional to 73,718.16, 110,581.02 and 21,135.48 is: 31,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,718.16 : 110,581.02 = 21,135.48 : x
  2. Step 2: Convert to fraction form
    73,718.16/110,581.02 = 21,135.48/x
  3. Step 3: Cross multiply
    73,718.16x = 110,581.02 × 21,135.48
  4. Step 4: Simplify right side
    73,718.16x = 2,337,182,936.59
  5. Step 5: Solve for x
    x = 2,337,182,936.59/73,718.16
  6. Step 6: Final answer
    x = 31,704.30

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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.