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Finding the Fourth Proportional to 64,489.91, 88,991.19 and 36,190.13

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Solution

The fourth proportional to 64,489.91, 88,991.19 and 36,190.13 is: 49,939.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,489.91 : 88,991.19 = 36,190.13 : x
  2. Step 2: Convert to fraction form
    64,489.91/88,991.19 = 36,190.13/x
  3. Step 3: Cross multiply
    64,489.91x = 88,991.19 × 36,190.13
  4. Step 4: Simplify right side
    64,489.91x = 3,220,602,290.00
  5. Step 5: Solve for x
    x = 3,220,602,290.00/64,489.91
  6. Step 6: Final answer
    x = 49,939.63

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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.