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Finding the Fourth Proportional to 64,778.48, 89,394.60 and 36,484.64

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Solution

The fourth proportional to 64,778.48, 89,394.60 and 36,484.64 is: 50,348.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,778.48 : 89,394.60 = 36,484.64 : x
  2. Step 2: Convert to fraction form
    64,778.48/89,394.60 = 36,484.64/x
  3. Step 3: Cross multiply
    64,778.48x = 89,394.60 × 36,484.64
  4. Step 4: Simplify right side
    64,778.48x = 3,261,529,798.94
  5. Step 5: Solve for x
    x = 3,261,529,798.94/64,778.48
  6. Step 6: Final answer
    x = 50,348.97

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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.