Home / 85,378.66-117,829.29-49,579.90

Finding the Fourth Proportional to 85,378.66, 117,829.29 and 49,579.90

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Solution

The fourth proportional to 85,378.66, 117,829.29 and 49,579.90 is: 68,424.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,378.66 : 117,829.29 = 49,579.90 : x
  2. Step 2: Convert to fraction form
    85,378.66/117,829.29 = 49,579.90/x
  3. Step 3: Cross multiply
    85,378.66x = 117,829.29 × 49,579.90
  4. Step 4: Simplify right side
    85,378.66x = 5,841,964,415.27
  5. Step 5: Solve for x
    x = 5,841,964,415.27/85,378.66
  6. Step 6: Final answer
    x = 68,424.18

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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.