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Finding the Fourth Proportional to 36,612.31, 54,918.47 and 8,910.31

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Solution

The fourth proportional to 36,612.31, 54,918.47 and 8,910.31 is: 13,365.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,612.31 : 54,918.47 = 8,910.31 : x
  2. Step 2: Convert to fraction form
    36,612.31/54,918.47 = 8,910.31/x
  3. Step 3: Cross multiply
    36,612.31x = 54,918.47 × 8,910.31
  4. Step 4: Simplify right side
    36,612.31x = 489,340,592.43
  5. Step 5: Solve for x
    x = 489,340,592.43/36,612.31
  6. Step 6: Final answer
    x = 13,365.47

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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.