Home / 78,138.42-107,840.85-44,148.60

Finding the Fourth Proportional to 78,138.42, 107,840.85 and 44,148.60

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Solution

The fourth proportional to 78,138.42, 107,840.85 and 44,148.60 is: 60,930.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,138.42 : 107,840.85 = 44,148.60 : x
  2. Step 2: Convert to fraction form
    78,138.42/107,840.85 = 44,148.60/x
  3. Step 3: Cross multiply
    78,138.42x = 107,840.85 × 44,148.60
  4. Step 4: Simplify right side
    78,138.42x = 4,761,022,550.31
  5. Step 5: Solve for x
    x = 4,761,022,550.31/78,138.42
  6. Step 6: Final answer
    x = 60,930.62

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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.