Home / 76,766.43-115,149.65-29,986.50

Finding the Fourth Proportional to 76,766.43, 115,149.65 and 29,986.50

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Solution

The fourth proportional to 76,766.43, 115,149.65 and 29,986.50 is: 44,979.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,766.43 : 115,149.65 = 29,986.50 : x
  2. Step 2: Convert to fraction form
    76,766.43/115,149.65 = 29,986.50/x
  3. Step 3: Cross multiply
    76,766.43x = 115,149.65 × 29,986.50
  4. Step 4: Simplify right side
    76,766.43x = 3,452,934,829.79
  5. Step 5: Solve for x
    x = 3,452,934,829.79/76,766.43
  6. Step 6: Final answer
    x = 44,979.75

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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.