Home / 85,419.36-117,845.28-49,602.78

Finding the Fourth Proportional to 85,419.36, 117,845.28 and 49,602.78

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Solution

The fourth proportional to 85,419.36, 117,845.28 and 49,602.78 is: 68,432.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,419.36 : 117,845.28 = 49,602.78 : x
  2. Step 2: Convert to fraction form
    85,419.36/117,845.28 = 49,602.78/x
  3. Step 3: Cross multiply
    85,419.36x = 117,845.28 × 49,602.78
  4. Step 4: Simplify right side
    85,419.36x = 5,845,453,497.88
  5. Step 5: Solve for x
    x = 5,845,453,497.88/85,419.36
  6. Step 6: Final answer
    x = 68,432.42

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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.