Home / 78,120.85-107,813.40-44,135.57

Finding the Fourth Proportional to 78,120.85, 107,813.40 and 44,135.57

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Solution

The fourth proportional to 78,120.85, 107,813.40 and 44,135.57 is: 60,910.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,120.85 : 107,813.40 = 44,135.57 : x
  2. Step 2: Convert to fraction form
    78,120.85/107,813.40 = 44,135.57/x
  3. Step 3: Cross multiply
    78,120.85x = 107,813.40 × 44,135.57
  4. Step 4: Simplify right side
    78,120.85x = 4,758,405,862.64
  5. Step 5: Solve for x
    x = 4,758,405,862.64/78,120.85
  6. Step 6: Final answer
    x = 60,910.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.