Home / 103,930.20-155,751.84-47,630.28

Finding the Fourth Proportional to 103,930.20, 155,751.84 and 47,630.28

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Solution

The fourth proportional to 103,930.20, 155,751.84 and 47,630.28 is: 71,379.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,930.20 : 155,751.84 = 47,630.28 : x
  2. Step 2: Convert to fraction form
    103,930.20/155,751.84 = 47,630.28/x
  3. Step 3: Cross multiply
    103,930.20x = 155,751.84 × 47,630.28
  4. Step 4: Simplify right side
    103,930.20x = 7,418,503,749.72
  5. Step 5: Solve for x
    x = 7,418,503,749.72/103,930.20
  6. Step 6: Final answer
    x = 71,379.67

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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.