Home / 76,836.60-115,280.82-36,887.40

Finding the Fourth Proportional to 76,836.60, 115,280.82 and 36,887.40

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Solution

The fourth proportional to 76,836.60, 115,280.82 and 36,887.40 is: 55,343.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,836.60 : 115,280.82 = 36,887.40 : x
  2. Step 2: Convert to fraction form
    76,836.60/115,280.82 = 36,887.40/x
  3. Step 3: Cross multiply
    76,836.60x = 115,280.82 × 36,887.40
  4. Step 4: Simplify right side
    76,836.60x = 4,252,409,719.67
  5. Step 5: Solve for x
    x = 4,252,409,719.67/76,836.60
  6. Step 6: Final answer
    x = 55,343.54

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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.