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Finding the Fourth Proportional to 64,668.78, 89,240.94 and 36,376.02

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Solution

The fourth proportional to 64,668.78, 89,240.94 and 36,376.02 is: 50,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,668.78 : 89,240.94 = 36,376.02 : x
  2. Step 2: Convert to fraction form
    64,668.78/89,240.94 = 36,376.02/x
  3. Step 3: Cross multiply
    64,668.78x = 89,240.94 × 36,376.02
  4. Step 4: Simplify right side
    64,668.78x = 3,246,230,218.26
  5. Step 5: Solve for x
    x = 3,246,230,218.26/64,668.78
  6. Step 6: Final answer
    x = 50,197.80

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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.