Home / 87,111.64-120,169.74-51,299.92

Finding the Fourth Proportional to 87,111.64, 120,169.74 and 51,299.92

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Solution

The fourth proportional to 87,111.64, 120,169.74 and 51,299.92 is: 70,767.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,111.64 : 120,169.74 = 51,299.92 : x
  2. Step 2: Convert to fraction form
    87,111.64/120,169.74 = 51,299.92/x
  3. Step 3: Cross multiply
    87,111.64x = 120,169.74 × 51,299.92
  4. Step 4: Simplify right side
    87,111.64x = 6,164,698,048.42
  5. Step 5: Solve for x
    x = 6,164,698,048.42/87,111.64
  6. Step 6: Final answer
    x = 70,767.79

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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.