Home / 71,542.18-107,315.30-18,951.67

Finding the Fourth Proportional to 71,542.18, 107,315.30 and 18,951.67

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Solution

The fourth proportional to 71,542.18, 107,315.30 and 18,951.67 is: 28,428.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,542.18 : 107,315.30 = 18,951.67 : x
  2. Step 2: Convert to fraction form
    71,542.18/107,315.30 = 18,951.67/x
  3. Step 3: Cross multiply
    71,542.18x = 107,315.30 × 18,951.67
  4. Step 4: Simplify right side
    71,542.18x = 2,033,804,151.55
  5. Step 5: Solve for x
    x = 2,033,804,151.55/71,542.18
  6. Step 6: Final answer
    x = 28,428.04

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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.