Home / 87,628.88-131,443.26-21,068.98

Finding the Fourth Proportional to 87,628.88, 131,443.26 and 21,068.98

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Solution

The fourth proportional to 87,628.88, 131,443.26 and 21,068.98 is: 31,603.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,628.88 : 131,443.26 = 21,068.98 : x
  2. Step 2: Convert to fraction form
    87,628.88/131,443.26 = 21,068.98/x
  3. Step 3: Cross multiply
    87,628.88x = 131,443.26 × 21,068.98
  4. Step 4: Simplify right side
    87,628.88x = 2,769,375,747.83
  5. Step 5: Solve for x
    x = 2,769,375,747.83/87,628.88
  6. Step 6: Final answer
    x = 31,603.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.