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Finding the Fourth Proportional to 64,718, 89,286.60 and 37,851.92

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Solution

The fourth proportional to 64,718, 89,286.60 and 37,851.92 is: 52,221.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,718 : 89,286.60 = 37,851.92 : x
  2. Step 2: Convert to fraction form
    64,718/89,286.60 = 37,851.92/x
  3. Step 3: Cross multiply
    64,718x = 89,286.60 × 37,851.92
  4. Step 4: Simplify right side
    64,718x = 3,379,669,240.27
  5. Step 5: Solve for x
    x = 3,379,669,240.27/64,718
  6. Step 6: Final answer
    x = 52,221.47

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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.