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Finding the Fourth Proportional to 54,603.60, 81,905.40 and 19,545.99

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Solution

The fourth proportional to 54,603.60, 81,905.40 and 19,545.99 is: 29,318.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,603.60 : 81,905.40 = 19,545.99 : x
  2. Step 2: Convert to fraction form
    54,603.60/81,905.40 = 19,545.99/x
  3. Step 3: Cross multiply
    54,603.60x = 81,905.40 × 19,545.99
  4. Step 4: Simplify right side
    54,603.60x = 1,600,922,129.35
  5. Step 5: Solve for x
    x = 1,600,922,129.35/54,603.60
  6. Step 6: Final answer
    x = 29,318.99

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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.