Home / 68,385.56-94,371.36-40,085.78

Finding the Fourth Proportional to 68,385.56, 94,371.36 and 40,085.78

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Solution

The fourth proportional to 68,385.56, 94,371.36 and 40,085.78 is: 55,317.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,385.56 : 94,371.36 = 40,085.78 : x
  2. Step 2: Convert to fraction form
    68,385.56/94,371.36 = 40,085.78/x
  3. Step 3: Cross multiply
    68,385.56x = 94,371.36 × 40,085.78
  4. Step 4: Simplify right side
    68,385.56x = 3,782,949,575.26
  5. Step 5: Solve for x
    x = 3,782,949,575.26/68,385.56
  6. Step 6: Final answer
    x = 55,317.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.