Home / 87,239.74-120,391.93-51,427.61

Finding the Fourth Proportional to 87,239.74, 120,391.93 and 51,427.61

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Solution

The fourth proportional to 87,239.74, 120,391.93 and 51,427.61 is: 70,970.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,239.74 : 120,391.93 = 51,427.61 : x
  2. Step 2: Convert to fraction form
    87,239.74/120,391.93 = 51,427.61/x
  3. Step 3: Cross multiply
    87,239.74x = 120,391.93 × 51,427.61
  4. Step 4: Simplify right side
    87,239.74x = 6,191,469,588.45
  5. Step 5: Solve for x
    x = 6,191,469,588.45/87,239.74
  6. Step 6: Final answer
    x = 70,970.75

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1.5x scale

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.