Home / 87,671.40-131,420.70-43,261.80

Finding the Fourth Proportional to 87,671.40, 131,420.70 and 43,261.80

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Solution

The fourth proportional to 87,671.40, 131,420.70 and 43,261.80 is: 64,850.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,671.40 : 131,420.70 = 43,261.80 : x
  2. Step 2: Convert to fraction form
    87,671.40/131,420.70 = 43,261.80/x
  3. Step 3: Cross multiply
    87,671.40x = 131,420.70 × 43,261.80
  4. Step 4: Simplify right side
    87,671.40x = 5,685,496,039.26
  5. Step 5: Solve for x
    x = 5,685,496,039.26/87,671.40
  6. Step 6: Final answer
    x = 64,850.07

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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.