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Finding the Fourth Proportional to 51,481.92, 77,220.96 and 18,649.92

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Solution

The fourth proportional to 51,481.92, 77,220.96 and 18,649.92 is: 27,974.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,481.92 : 77,220.96 = 18,649.92 : x
  2. Step 2: Convert to fraction form
    51,481.92/77,220.96 = 18,649.92/x
  3. Step 3: Cross multiply
    51,481.92x = 77,220.96 × 18,649.92
  4. Step 4: Simplify right side
    51,481.92x = 1,440,164,726.32
  5. Step 5: Solve for x
    x = 1,440,164,726.32/51,481.92
  6. Step 6: Final answer
    x = 27,974.18

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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.