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Finding the Fourth Proportional to 103,776.70, 155,648.67 and 33,639.64

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Solution

The fourth proportional to 103,776.70, 155,648.67 and 33,639.64 is: 50,454.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,776.70 : 155,648.67 = 33,639.64 : x
  2. Step 2: Convert to fraction form
    103,776.70/155,648.67 = 33,639.64/x
  3. Step 3: Cross multiply
    103,776.70x = 155,648.67 × 33,639.64
  4. Step 4: Simplify right side
    103,776.70x = 5,235,965,225.28
  5. Step 5: Solve for x
    x = 5,235,965,225.28/103,776.70
  6. Step 6: Final answer
    x = 50,454.15

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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.