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Finding the Fourth Proportional to 64,840.92, 89,502.60 and 37,991.98

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Solution

The fourth proportional to 64,840.92, 89,502.60 and 37,991.98 is: 52,441.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,840.92 : 89,502.60 = 37,991.98 : x
  2. Step 2: Convert to fraction form
    64,840.92/89,502.60 = 37,991.98/x
  3. Step 3: Cross multiply
    64,840.92x = 89,502.60 × 37,991.98
  4. Step 4: Simplify right side
    64,840.92x = 3,400,380,989.15
  5. Step 5: Solve for x
    x = 3,400,380,989.15/64,840.92
  6. Step 6: Final answer
    x = 52,441.90

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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.