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Finding the Fourth Proportional to 36,608.10, 54,802.80 and 21,809.40

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Solution

The fourth proportional to 36,608.10, 54,802.80 and 21,809.40 is: 32,648.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,608.10 : 54,802.80 = 21,809.40 : x
  2. Step 2: Convert to fraction form
    36,608.10/54,802.80 = 21,809.40/x
  3. Step 3: Cross multiply
    36,608.10x = 54,802.80 × 21,809.40
  4. Step 4: Simplify right side
    36,608.10x = 1,195,216,186.32
  5. Step 5: Solve for x
    x = 1,195,216,186.32/36,608.10
  6. Step 6: Final answer
    x = 32,648.95

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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.