Home / 76,829.28-115,175.52-30,114.72

Finding the Fourth Proportional to 76,829.28, 115,175.52 and 30,114.72

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Solution

The fourth proportional to 76,829.28, 115,175.52 and 30,114.72 is: 45,145.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,829.28 : 115,175.52 = 30,114.72 : x
  2. Step 2: Convert to fraction form
    76,829.28/115,175.52 = 30,114.72/x
  3. Step 3: Cross multiply
    76,829.28x = 115,175.52 × 30,114.72
  4. Step 4: Simplify right side
    76,829.28x = 3,468,478,535.65
  5. Step 5: Solve for x
    x = 3,468,478,535.65/76,829.28
  6. Step 6: Final answer
    x = 45,145.27

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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.