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Finding the Fourth Proportional to 72,679.82, 109,018.38 and 22,760.06

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Solution

The fourth proportional to 72,679.82, 109,018.38 and 22,760.06 is: 34,139.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,679.82 : 109,018.38 = 22,760.06 : x
  2. Step 2: Convert to fraction form
    72,679.82/109,018.38 = 22,760.06/x
  3. Step 3: Cross multiply
    72,679.82x = 109,018.38 × 22,760.06
  4. Step 4: Simplify right side
    72,679.82x = 2,481,264,869.90
  5. Step 5: Solve for x
    x = 2,481,264,869.90/72,679.82
  6. Step 6: Final answer
    x = 34,139.67

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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.