Home / 87,679.44-121,005-53,687.76

Finding the Fourth Proportional to 87,679.44, 121,005 and 53,687.76

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Solution

The fourth proportional to 87,679.44, 121,005 and 53,687.76 is: 74,093.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,679.44 : 121,005 = 53,687.76 : x
  2. Step 2: Convert to fraction form
    87,679.44/121,005 = 53,687.76/x
  3. Step 3: Cross multiply
    87,679.44x = 121,005 × 53,687.76
  4. Step 4: Simplify right side
    87,679.44x = 6,496,487,398.80
  5. Step 5: Solve for x
    x = 6,496,487,398.80/87,679.44
  6. Step 6: Final answer
    x = 74,093.62

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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.