Home / 76,941.88-115,411.62-39,480.34

Finding the Fourth Proportional to 76,941.88, 115,411.62 and 39,480.34

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Solution

The fourth proportional to 76,941.88, 115,411.62 and 39,480.34 is: 59,219.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,941.88 : 115,411.62 = 39,480.34 : x
  2. Step 2: Convert to fraction form
    76,941.88/115,411.62 = 39,480.34/x
  3. Step 3: Cross multiply
    76,941.88x = 115,411.62 × 39,480.34
  4. Step 4: Simplify right side
    76,941.88x = 4,556,489,997.55
  5. Step 5: Solve for x
    x = 4,556,489,997.55/76,941.88
  6. Step 6: Final answer
    x = 59,219.89

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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.