Home / 87,342.90-131,042.05-31,181.81

Finding the Fourth Proportional to 87,342.90, 131,042.05 and 31,181.81

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Solution

The fourth proportional to 87,342.90, 131,042.05 and 31,181.81 is: 46,782.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,342.90 : 131,042.05 = 31,181.81 : x
  2. Step 2: Convert to fraction form
    87,342.90/131,042.05 = 31,181.81/x
  3. Step 3: Cross multiply
    87,342.90x = 131,042.05 × 31,181.81
  4. Step 4: Simplify right side
    87,342.90x = 4,086,127,493.99
  5. Step 5: Solve for x
    x = 4,086,127,493.99/87,342.90
  6. Step 6: Final answer
    x = 46,782.59

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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.