Home / 76,723.60-115,076.04-20,567.92

Finding the Fourth Proportional to 76,723.60, 115,076.04 and 20,567.92

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Solution

The fourth proportional to 76,723.60, 115,076.04 and 20,567.92 is: 30,849.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,723.60 : 115,076.04 = 20,567.92 : x
  2. Step 2: Convert to fraction form
    76,723.60/115,076.04 = 20,567.92/x
  3. Step 3: Cross multiply
    76,723.60x = 115,076.04 × 20,567.92
  4. Step 4: Simplify right side
    76,723.60x = 2,366,874,784.64
  5. Step 5: Solve for x
    x = 2,366,874,784.64/76,723.60
  6. Step 6: Final answer
    x = 30,849.37

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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.