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Finding the Fourth Proportional to 87,796.50, 121,159.73 and 51,490.54

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Solution

The fourth proportional to 87,796.50, 121,159.73 and 51,490.54 is: 71,057.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,796.50 : 121,159.73 = 51,490.54 : x
  2. Step 2: Convert to fraction form
    87,796.50/121,159.73 = 51,490.54/x
  3. Step 3: Cross multiply
    87,796.50x = 121,159.73 × 51,490.54
  4. Step 4: Simplify right side
    87,796.50x = 6,238,579,923.95
  5. Step 5: Solve for x
    x = 6,238,579,923.95/87,796.50
  6. Step 6: Final answer
    x = 71,057.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.