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Finding the Fourth Proportional to 78,419.44, 108,247.39 and 48,245.22

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Solution

The fourth proportional to 78,419.44, 108,247.39 and 48,245.22 is: 66,595.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,419.44 : 108,247.39 = 48,245.22 : x
  2. Step 2: Convert to fraction form
    78,419.44/108,247.39 = 48,245.22/x
  3. Step 3: Cross multiply
    78,419.44x = 108,247.39 × 48,245.22
  4. Step 4: Simplify right side
    78,419.44x = 5,222,419,024.36
  5. Step 5: Solve for x
    x = 5,222,419,024.36/78,419.44
  6. Step 6: Final answer
    x = 66,595.97

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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.