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Finding the Fourth Proportional to 99,379.40, 149,072.70 and 29,265.80

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Solution

The fourth proportional to 99,379.40, 149,072.70 and 29,265.80 is: 43,899.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,379.40 : 149,072.70 = 29,265.80 : x
  2. Step 2: Convert to fraction form
    99,379.40/149,072.70 = 29,265.80/x
  3. Step 3: Cross multiply
    99,379.40x = 149,072.70 × 29,265.80
  4. Step 4: Simplify right side
    99,379.40x = 4,362,731,823.66
  5. Step 5: Solve for x
    x = 4,362,731,823.66/99,379.40
  6. Step 6: Final answer
    x = 43,899.76

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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.