Home / 103,965.32-155,818.78-47,745.79

Finding the Fourth Proportional to 103,965.32, 155,818.78 and 47,745.79

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Solution

The fourth proportional to 103,965.32, 155,818.78 and 47,745.79 is: 71,559.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,965.32 : 155,818.78 = 47,745.79 : x
  2. Step 2: Convert to fraction form
    103,965.32/155,818.78 = 47,745.79/x
  3. Step 3: Cross multiply
    103,965.32x = 155,818.78 × 47,745.79
  4. Step 4: Simplify right side
    103,965.32x = 7,439,690,747.94
  5. Step 5: Solve for x
    x = 7,439,690,747.94/103,965.32
  6. Step 6: Final answer
    x = 71,559.35

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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.