Home / 87,342.40-131,041.29-31,181.30

Finding the Fourth Proportional to 87,342.40, 131,041.29 and 31,181.30

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Solution

The fourth proportional to 87,342.40, 131,041.29 and 31,181.30 is: 46,781.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,342.40 : 131,041.29 = 31,181.30 : x
  2. Step 2: Convert to fraction form
    87,342.40/131,041.29 = 31,181.30/x
  3. Step 3: Cross multiply
    87,342.40x = 131,041.29 × 31,181.30
  4. Step 4: Simplify right side
    87,342.40x = 4,086,038,466.11
  5. Step 5: Solve for x
    x = 4,086,038,466.11/87,342.40
  6. Step 6: Final answer
    x = 46,781.84

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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.