Home / 87,817.48-131,726.55-21,257.49

Finding the Fourth Proportional to 87,817.48, 131,726.55 and 21,257.49

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Solution

The fourth proportional to 87,817.48, 131,726.55 and 21,257.49 is: 31,886.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,817.48 : 131,726.55 = 21,257.49 : x
  2. Step 2: Convert to fraction form
    87,817.48/131,726.55 = 21,257.49/x
  3. Step 3: Cross multiply
    87,817.48x = 131,726.55 × 21,257.49
  4. Step 4: Simplify right side
    87,817.48x = 2,800,176,393.05
  5. Step 5: Solve for x
    x = 2,800,176,393.05/87,817.48
  6. Step 6: Final answer
    x = 31,886.32

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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.