Home / 87,474.09-120,730.73-54,783.66

Finding the Fourth Proportional to 87,474.09, 120,730.73 and 54,783.66

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Solution

The fourth proportional to 87,474.09, 120,730.73 and 54,783.66 is: 75,611.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,474.09 : 120,730.73 = 54,783.66 : x
  2. Step 2: Convert to fraction form
    87,474.09/120,730.73 = 54,783.66/x
  3. Step 3: Cross multiply
    87,474.09x = 120,730.73 × 54,783.66
  4. Step 4: Simplify right side
    87,474.09x = 6,614,071,263.87
  5. Step 5: Solve for x
    x = 6,614,071,263.87/87,474.09
  6. Step 6: Final answer
    x = 75,611.78

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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.