Home / 87,234.21-130,890.20-31,817.25

Finding the Fourth Proportional to 87,234.21, 130,890.20 and 31,817.25

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Solution

The fourth proportional to 87,234.21, 130,890.20 and 31,817.25 is: 47,740.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,234.21 : 130,890.20 = 31,817.25 : x
  2. Step 2: Convert to fraction form
    87,234.21/130,890.20 = 31,817.25/x
  3. Step 3: Cross multiply
    87,234.21x = 130,890.20 × 31,817.25
  4. Step 4: Simplify right side
    87,234.21x = 4,164,566,215.95
  5. Step 5: Solve for x
    x = 4,164,566,215.95/87,234.21
  6. Step 6: Final answer
    x = 47,740.06

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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.