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Finding the Fourth Proportional to 54,356.88, 74,977.96 and 39,271.68

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Solution

The fourth proportional to 54,356.88, 74,977.96 and 39,271.68 is: 54,169.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,356.88 : 74,977.96 = 39,271.68 : x
  2. Step 2: Convert to fraction form
    54,356.88/74,977.96 = 39,271.68/x
  3. Step 3: Cross multiply
    54,356.88x = 74,977.96 × 39,271.68
  4. Step 4: Simplify right side
    54,356.88x = 2,944,510,452.17
  5. Step 5: Solve for x
    x = 2,944,510,452.17/54,356.88
  6. Step 6: Final answer
    x = 54,169.97

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Why These Related Problems?

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