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Finding the Fourth Proportional to 45,855.60, 68,816.07 and 20,898.96

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Solution

The fourth proportional to 45,855.60, 68,816.07 and 20,898.96 is: 31,363.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,855.60 : 68,816.07 = 20,898.96 : x
  2. Step 2: Convert to fraction form
    45,855.60/68,816.07 = 20,898.96/x
  3. Step 3: Cross multiply
    45,855.60x = 68,816.07 × 20,898.96
  4. Step 4: Simplify right side
    45,855.60x = 1,438,184,294.29
  5. Step 5: Solve for x
    x = 1,438,184,294.29/45,855.60
  6. Step 6: Final answer
    x = 31,363.33

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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.