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Finding the Fourth Proportional to 64,863.18, 89,510 and 36,568.90

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Solution

The fourth proportional to 64,863.18, 89,510 and 36,568.90 is: 50,464.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,863.18 : 89,510 = 36,568.90 : x
  2. Step 2: Convert to fraction form
    64,863.18/89,510 = 36,568.90/x
  3. Step 3: Cross multiply
    64,863.18x = 89,510 × 36,568.90
  4. Step 4: Simplify right side
    64,863.18x = 3,273,282,239
  5. Step 5: Solve for x
    x = 3,273,282,239/64,863.18
  6. Step 6: Final answer
    x = 50,464.41

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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.