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Finding the Fourth Proportional to 48,991.70, 73,490.63 and 40,115.86

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Solution

The fourth proportional to 48,991.70, 73,490.63 and 40,115.86 is: 60,176.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,991.70 : 73,490.63 = 40,115.86 : x
  2. Step 2: Convert to fraction form
    48,991.70/73,490.63 = 40,115.86/x
  3. Step 3: Cross multiply
    48,991.70x = 73,490.63 × 40,115.86
  4. Step 4: Simplify right side
    48,991.70x = 2,948,139,440.09
  5. Step 5: Solve for x
    x = 2,948,139,440.09/48,991.70
  6. Step 6: Final answer
    x = 60,176.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.