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Finding the Fourth Proportional to 34,355.20, 51,532.80 and 21,233.20

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Solution

The fourth proportional to 34,355.20, 51,532.80 and 21,233.20 is: 31,849.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,355.20 : 51,532.80 = 21,233.20 : x
  2. Step 2: Convert to fraction form
    34,355.20/51,532.80 = 21,233.20/x
  3. Step 3: Cross multiply
    34,355.20x = 51,532.80 × 21,233.20
  4. Step 4: Simplify right side
    34,355.20x = 1,094,206,248.96
  5. Step 5: Solve for x
    x = 1,094,206,248.96/34,355.20
  6. Step 6: Final answer
    x = 31,849.80

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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.