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Finding the Fourth Proportional to 54,603.92, 81,901.88 and 21,317.68

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Solution

The fourth proportional to 54,603.92, 81,901.88 and 21,317.68 is: 31,974.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,603.92 : 81,901.88 = 21,317.68 : x
  2. Step 2: Convert to fraction form
    54,603.92/81,901.88 = 21,317.68/x
  3. Step 3: Cross multiply
    54,603.92x = 81,901.88 × 21,317.68
  4. Step 4: Simplify right side
    54,603.92x = 1,745,958,069.24
  5. Step 5: Solve for x
    x = 1,745,958,069.24/54,603.92
  6. Step 6: Final answer
    x = 31,974.96

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1.5x scale

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.