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Finding the Fourth Proportional to 66,443.69, 99,701.99 and 26,990.21

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Solution

The fourth proportional to 66,443.69, 99,701.99 and 26,990.21 is: 40,500.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,443.69 : 99,701.99 = 26,990.21 : x
  2. Step 2: Convert to fraction form
    66,443.69/99,701.99 = 26,990.21/x
  3. Step 3: Cross multiply
    66,443.69x = 99,701.99 × 26,990.21
  4. Step 4: Simplify right side
    66,443.69x = 2,690,977,014.06
  5. Step 5: Solve for x
    x = 2,690,977,014.06/66,443.69
  6. Step 6: Final answer
    x = 40,500.12

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