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Finding the Fourth Proportional to 65,145.72, 89,905.44 and 36,467.92

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Solution

The fourth proportional to 65,145.72, 89,905.44 and 36,467.92 is: 50,328.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,145.72 : 89,905.44 = 36,467.92 : x
  2. Step 2: Convert to fraction form
    65,145.72/89,905.44 = 36,467.92/x
  3. Step 3: Cross multiply
    65,145.72x = 89,905.44 × 36,467.92
  4. Step 4: Simplify right side
    65,145.72x = 3,278,664,642.62
  5. Step 5: Solve for x
    x = 3,278,664,642.62/65,145.72
  6. Step 6: Final answer
    x = 50,328.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.