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Finding the Fourth Proportional to 103,450.82, 155,148.21 and 28,552.95

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Solution

The fourth proportional to 103,450.82, 155,148.21 and 28,552.95 is: 42,821.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,450.82 : 155,148.21 = 28,552.95 : x
  2. Step 2: Convert to fraction form
    103,450.82/155,148.21 = 28,552.95/x
  3. Step 3: Cross multiply
    103,450.82x = 155,148.21 × 28,552.95
  4. Step 4: Simplify right side
    103,450.82x = 4,429,939,082.72
  5. Step 5: Solve for x
    x = 4,429,939,082.72/103,450.82
  6. Step 6: Final answer
    x = 42,821.69

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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.