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Finding the Fourth Proportional to 53,991.87, 81,012.42 and 27,715.08

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Solution

The fourth proportional to 53,991.87, 81,012.42 and 27,715.08 is: 41,585.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,991.87 : 81,012.42 = 27,715.08 : x
  2. Step 2: Convert to fraction form
    53,991.87/81,012.42 = 27,715.08/x
  3. Step 3: Cross multiply
    53,991.87x = 81,012.42 × 27,715.08
  4. Step 4: Simplify right side
    53,991.87x = 2,245,265,701.29
  5. Step 5: Solve for x
    x = 2,245,265,701.29/53,991.87
  6. Step 6: Final answer
    x = 41,585.26

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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.