Home / 76,825.64-115,138.56-39,353.96

Finding the Fourth Proportional to 76,825.64, 115,138.56 and 39,353.96

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Solution

The fourth proportional to 76,825.64, 115,138.56 and 39,353.96 is: 58,979.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,825.64 : 115,138.56 = 39,353.96 : x
  2. Step 2: Convert to fraction form
    76,825.64/115,138.56 = 39,353.96/x
  3. Step 3: Cross multiply
    76,825.64x = 115,138.56 × 39,353.96
  4. Step 4: Simplify right side
    76,825.64x = 4,531,158,284.70
  5. Step 5: Solve for x
    x = 4,531,158,284.70/76,825.64
  6. Step 6: Final answer
    x = 58,979.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.