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Finding the Fourth Proportional to 39,464.79, 54,462.74 and 21,561.14

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Solution

The fourth proportional to 39,464.79, 54,462.74 and 21,561.14 is: 29,755.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,464.79 : 54,462.74 = 21,561.14 : x
  2. Step 2: Convert to fraction form
    39,464.79/54,462.74 = 21,561.14/x
  3. Step 3: Cross multiply
    39,464.79x = 54,462.74 × 21,561.14
  4. Step 4: Simplify right side
    39,464.79x = 1,174,278,381.80
  5. Step 5: Solve for x
    x = 1,174,278,381.80/39,464.79
  6. Step 6: Final answer
    x = 29,755.09

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.