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Finding the Fourth Proportional to 54,673.79, 81,711.11 and 39,913.79

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Solution

The fourth proportional to 54,673.79, 81,711.11 and 39,913.79 is: 59,651.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,673.79 : 81,711.11 = 39,913.79 : x
  2. Step 2: Convert to fraction form
    54,673.79/81,711.11 = 39,913.79/x
  3. Step 3: Cross multiply
    54,673.79x = 81,711.11 × 39,913.79
  4. Step 4: Simplify right side
    54,673.79x = 3,261,399,626.76
  5. Step 5: Solve for x
    x = 3,261,399,626.76/54,673.79
  6. Step 6: Final answer
    x = 59,651.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.