Home / 76,972.60-115,631.70-53,644.60

Finding the Fourth Proportional to 76,972.60, 115,631.70 and 53,644.60

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Solution

The fourth proportional to 76,972.60, 115,631.70 and 53,644.60 is: 80,587.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,972.60 : 115,631.70 = 53,644.60 : x
  2. Step 2: Convert to fraction form
    76,972.60/115,631.70 = 53,644.60/x
  3. Step 3: Cross multiply
    76,972.60x = 115,631.70 × 53,644.60
  4. Step 4: Simplify right side
    76,972.60x = 6,203,016,293.82
  5. Step 5: Solve for x
    x = 6,203,016,293.82/76,972.60
  6. Step 6: Final answer
    x = 80,587.33

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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.