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Finding the Fourth Proportional to 54,699.67, 82,064.09 and 19,639.63

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Solution

The fourth proportional to 54,699.67, 82,064.09 and 19,639.63 is: 29,464.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,699.67 : 82,064.09 = 19,639.63 : x
  2. Step 2: Convert to fraction form
    54,699.67/82,064.09 = 19,639.63/x
  3. Step 3: Cross multiply
    54,699.67x = 82,064.09 × 19,639.63
  4. Step 4: Simplify right side
    54,699.67x = 1,611,708,515.57
  5. Step 5: Solve for x
    x = 1,611,708,515.57/54,699.67
  6. Step 6: Final answer
    x = 29,464.68

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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.