Home / 87,858.95-131,787.25-21,299.67

Finding the Fourth Proportional to 87,858.95, 131,787.25 and 21,299.67

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Solution

The fourth proportional to 87,858.95, 131,787.25 and 21,299.67 is: 31,949.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,858.95 : 131,787.25 = 21,299.67 : x
  2. Step 2: Convert to fraction form
    87,858.95/131,787.25 = 21,299.67/x
  3. Step 3: Cross multiply
    87,858.95x = 131,787.25 × 21,299.67
  4. Step 4: Simplify right side
    87,858.95x = 2,807,024,881.96
  5. Step 5: Solve for x
    x = 2,807,024,881.96/87,858.95
  6. Step 6: Final answer
    x = 31,949.22

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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.