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Finding the Fourth Proportional to 72,889.93, 109,269.28 and 26,131.87

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Solution

The fourth proportional to 72,889.93, 109,269.28 and 26,131.87 is: 39,174.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,889.93 : 109,269.28 = 26,131.87 : x
  2. Step 2: Convert to fraction form
    72,889.93/109,269.28 = 26,131.87/x
  3. Step 3: Cross multiply
    72,889.93x = 109,269.28 × 26,131.87
  4. Step 4: Simplify right side
    72,889.93x = 2,855,410,619.95
  5. Step 5: Solve for x
    x = 2,855,410,619.95/72,889.93
  6. Step 6: Final answer
    x = 39,174.28

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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.