Home / 87,422.30-131,152.73-51,915.90

Finding the Fourth Proportional to 87,422.30, 131,152.73 and 51,915.90

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Solution

The fourth proportional to 87,422.30, 131,152.73 and 51,915.90 is: 77,885.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,422.30 : 131,152.73 = 51,915.90 : x
  2. Step 2: Convert to fraction form
    87,422.30/131,152.73 = 51,915.90/x
  3. Step 3: Cross multiply
    87,422.30x = 131,152.73 × 51,915.90
  4. Step 4: Simplify right side
    87,422.30x = 6,808,912,015.41
  5. Step 5: Solve for x
    x = 6,808,912,015.41/87,422.30
  6. Step 6: Final answer
    x = 77,885.30

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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.