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Finding the Fourth Proportional to 64,874.53, 89,476.48 and 40,992.49

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Solution

The fourth proportional to 64,874.53, 89,476.48 and 40,992.49 is: 56,537.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,874.53 : 89,476.48 = 40,992.49 : x
  2. Step 2: Convert to fraction form
    64,874.53/89,476.48 = 40,992.49/x
  3. Step 3: Cross multiply
    64,874.53x = 89,476.48 × 40,992.49
  4. Step 4: Simplify right side
    64,874.53x = 3,667,863,711.64
  5. Step 5: Solve for x
    x = 3,667,863,711.64/64,874.53
  6. Step 6: Final answer
    x = 56,537.81

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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.