Home / 76,941.30-115,342.29-30,181.62

Finding the Fourth Proportional to 76,941.30, 115,342.29 and 30,181.62

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Solution

The fourth proportional to 76,941.30, 115,342.29 and 30,181.62 is: 45,245.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,941.30 : 115,342.29 = 30,181.62 : x
  2. Step 2: Convert to fraction form
    76,941.30/115,342.29 = 30,181.62/x
  3. Step 3: Cross multiply
    76,941.30x = 115,342.29 × 30,181.62
  4. Step 4: Simplify right side
    76,941.30x = 3,481,217,166.71
  5. Step 5: Solve for x
    x = 3,481,217,166.71/76,941.30
  6. Step 6: Final answer
    x = 45,245.10

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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.