Home / 87,667.80-131,501.70-54,490.20

Finding the Fourth Proportional to 87,667.80, 131,501.70 and 54,490.20

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Solution

The fourth proportional to 87,667.80, 131,501.70 and 54,490.20 is: 81,735.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,667.80 : 131,501.70 = 54,490.20 : x
  2. Step 2: Convert to fraction form
    87,667.80/131,501.70 = 54,490.20/x
  3. Step 3: Cross multiply
    87,667.80x = 131,501.70 × 54,490.20
  4. Step 4: Simplify right side
    87,667.80x = 7,165,553,933.34
  5. Step 5: Solve for x
    x = 7,165,553,933.34/87,667.80
  6. Step 6: Final answer
    x = 81,735.30

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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.