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Finding the Fourth Proportional to 68,809.80, 103,222.80 and 24,427.20

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Solution

The fourth proportional to 68,809.80, 103,222.80 and 24,427.20 is: 36,643.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,809.80 : 103,222.80 = 24,427.20 : x
  2. Step 2: Convert to fraction form
    68,809.80/103,222.80 = 24,427.20/x
  3. Step 3: Cross multiply
    68,809.80x = 103,222.80 × 24,427.20
  4. Step 4: Simplify right side
    68,809.80x = 2,521,443,980.16
  5. Step 5: Solve for x
    x = 2,521,443,980.16/68,809.80
  6. Step 6: Final answer
    x = 36,643.68

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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.