Home / 87,768.30-131,666.10-28,590.21

Finding the Fourth Proportional to 87,768.30, 131,666.10 and 28,590.21

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Solution

The fourth proportional to 87,768.30, 131,666.10 and 28,590.21 is: 42,889.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,768.30 : 131,666.10 = 28,590.21 : x
  2. Step 2: Convert to fraction form
    87,768.30/131,666.10 = 28,590.21/x
  3. Step 3: Cross multiply
    87,768.30x = 131,666.10 × 28,590.21
  4. Step 4: Simplify right side
    87,768.30x = 3,764,361,448.88
  5. Step 5: Solve for x
    x = 3,764,361,448.88/87,768.30
  6. Step 6: Final answer
    x = 42,889.76

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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.