Home / 71,331.09-106,988.50-18,744.67

Finding the Fourth Proportional to 71,331.09, 106,988.50 and 18,744.67

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Solution

The fourth proportional to 71,331.09, 106,988.50 and 18,744.67 is: 28,114.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,331.09 : 106,988.50 = 18,744.67 : x
  2. Step 2: Convert to fraction form
    71,331.09/106,988.50 = 18,744.67/x
  3. Step 3: Cross multiply
    71,331.09x = 106,988.50 × 18,744.67
  4. Step 4: Simplify right side
    71,331.09x = 2,005,464,126.30
  5. Step 5: Solve for x
    x = 2,005,464,126.30/71,331.09
  6. Step 6: Final answer
    x = 28,114.87

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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.