Home / 87,421.84-131,100.58-31,246.76

Finding the Fourth Proportional to 87,421.84, 131,100.58 and 31,246.76

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Solution

The fourth proportional to 87,421.84, 131,100.58 and 31,246.76 is: 46,858.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,421.84 : 131,100.58 = 31,246.76 : x
  2. Step 2: Convert to fraction form
    87,421.84/131,100.58 = 31,246.76/x
  3. Step 3: Cross multiply
    87,421.84x = 131,100.58 × 31,246.76
  4. Step 4: Simplify right side
    87,421.84x = 4,096,468,359.12
  5. Step 5: Solve for x
    x = 4,096,468,359.12/87,421.84
  6. Step 6: Final answer
    x = 46,858.64

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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.