Home / 87,885.50-131,828.03-21,325.57

Finding the Fourth Proportional to 87,885.50, 131,828.03 and 21,325.57

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Solution

The fourth proportional to 87,885.50, 131,828.03 and 21,325.57 is: 31,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,885.50 : 131,828.03 = 21,325.57 : x
  2. Step 2: Convert to fraction form
    87,885.50/131,828.03 = 21,325.57/x
  3. Step 3: Cross multiply
    87,885.50x = 131,828.03 × 21,325.57
  4. Step 4: Simplify right side
    87,885.50x = 2,811,307,222.59
  5. Step 5: Solve for x
    x = 2,811,307,222.59/87,885.50
  6. Step 6: Final answer
    x = 31,988.30

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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.