Home / 87,420.84-131,099.08-31,245.76

Finding the Fourth Proportional to 87,420.84, 131,099.08 and 31,245.76

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Solution

The fourth proportional to 87,420.84, 131,099.08 and 31,245.76 is: 46,857.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,420.84 : 131,099.08 = 31,245.76 : x
  2. Step 2: Convert to fraction form
    87,420.84/131,099.08 = 31,245.76/x
  3. Step 3: Cross multiply
    87,420.84x = 131,099.08 × 31,245.76
  4. Step 4: Simplify right side
    87,420.84x = 4,096,290,389.90
  5. Step 5: Solve for x
    x = 4,096,290,389.90/87,420.84
  6. Step 6: Final answer
    x = 46,857.14

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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.