Home / 78,120.83-107,813.39-44,135.55

Finding the Fourth Proportional to 78,120.83, 107,813.39 and 44,135.55

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Solution

The fourth proportional to 78,120.83, 107,813.39 and 44,135.55 is: 60,910.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,120.83 : 107,813.39 = 44,135.55 : x
  2. Step 2: Convert to fraction form
    78,120.83/107,813.39 = 44,135.55/x
  3. Step 3: Cross multiply
    78,120.83x = 107,813.39 × 44,135.55
  4. Step 4: Simplify right side
    78,120.83x = 4,758,403,044.34
  5. Step 5: Solve for x
    x = 4,758,403,044.34/78,120.83
  6. Step 6: Final answer
    x = 60,910.81

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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.