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Finding the Fourth Proportional to 54,353.70, 81,545.94 and 19,296.90

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Solution

The fourth proportional to 54,353.70, 81,545.94 and 19,296.90 is: 28,950.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,353.70 : 81,545.94 = 19,296.90 : x
  2. Step 2: Convert to fraction form
    54,353.70/81,545.94 = 19,296.90/x
  3. Step 3: Cross multiply
    54,353.70x = 81,545.94 × 19,296.90
  4. Step 4: Simplify right side
    54,353.70x = 1,573,583,849.59
  5. Step 5: Solve for x
    x = 1,573,583,849.59/54,353.70
  6. Step 6: Final answer
    x = 28,950.81

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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.