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Finding the Fourth Proportional to 45,678.80, 68,454.20 and 36,334.80

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Solution

The fourth proportional to 45,678.80, 68,454.20 and 36,334.80 is: 54,451.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,678.80 : 68,454.20 = 36,334.80 : x
  2. Step 2: Convert to fraction form
    45,678.80/68,454.20 = 36,334.80/x
  3. Step 3: Cross multiply
    45,678.80x = 68,454.20 × 36,334.80
  4. Step 4: Simplify right side
    45,678.80x = 2,487,269,666.16
  5. Step 5: Solve for x
    x = 2,487,269,666.16/45,678.80
  6. Step 6: Final answer
    x = 54,451.29

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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.