Home / 78,439.73-108,249.21-48,242.79

Finding the Fourth Proportional to 78,439.73, 108,249.21 and 48,242.79

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Solution

The fourth proportional to 78,439.73, 108,249.21 and 48,242.79 is: 66,576.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,439.73 : 108,249.21 = 48,242.79 : x
  2. Step 2: Convert to fraction form
    78,439.73/108,249.21 = 48,242.79/x
  3. Step 3: Cross multiply
    78,439.73x = 108,249.21 × 48,242.79
  4. Step 4: Simplify right side
    78,439.73x = 5,222,243,905.70
  5. Step 5: Solve for x
    x = 5,222,243,905.70/78,439.73
  6. Step 6: Final answer
    x = 66,576.52

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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.