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Finding the Fourth Proportional to 64,788.75, 89,411.24 and 36,108.44

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Solution

The fourth proportional to 64,788.75, 89,411.24 and 36,108.44 is: 49,831.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,788.75 : 89,411.24 = 36,108.44 : x
  2. Step 2: Convert to fraction form
    64,788.75/89,411.24 = 36,108.44/x
  3. Step 3: Cross multiply
    64,788.75x = 89,411.24 × 36,108.44
  4. Step 4: Simplify right side
    64,788.75x = 3,228,500,394.87
  5. Step 5: Solve for x
    x = 3,228,500,394.87/64,788.75
  6. Step 6: Final answer
    x = 49,831.19

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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.