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Finding the Fourth Proportional to 99,991.44, 150,013.08 and 29,870.64

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Solution

The fourth proportional to 99,991.44, 150,013.08 and 29,870.64 is: 44,813.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,991.44 : 150,013.08 = 29,870.64 : x
  2. Step 2: Convert to fraction form
    99,991.44/150,013.08 = 29,870.64/x
  3. Step 3: Cross multiply
    99,991.44x = 150,013.08 × 29,870.64
  4. Step 4: Simplify right side
    99,991.44x = 4,480,986,707.97
  5. Step 5: Solve for x
    x = 4,480,986,707.97/99,991.44
  6. Step 6: Final answer
    x = 44,813.70

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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.