Home / 77,385.26-115,922.36-40,371.50

Finding the Fourth Proportional to 77,385.26, 115,922.36 and 40,371.50

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Solution

The fourth proportional to 77,385.26, 115,922.36 and 40,371.50 is: 60,476.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,385.26 : 115,922.36 = 40,371.50 : x
  2. Step 2: Convert to fraction form
    77,385.26/115,922.36 = 40,371.50/x
  3. Step 3: Cross multiply
    77,385.26x = 115,922.36 × 40,371.50
  4. Step 4: Simplify right side
    77,385.26x = 4,679,959,556.74
  5. Step 5: Solve for x
    x = 4,679,959,556.74/77,385.26
  6. Step 6: Final answer
    x = 60,476.11

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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.