Home / 85,438.23-117,905.54-49,629.75

Finding the Fourth Proportional to 85,438.23, 117,905.54 and 49,629.75

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Solution

The fourth proportional to 85,438.23, 117,905.54 and 49,629.75 is: 68,489.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,438.23 : 117,905.54 = 49,629.75 : x
  2. Step 2: Convert to fraction form
    85,438.23/117,905.54 = 49,629.75/x
  3. Step 3: Cross multiply
    85,438.23x = 117,905.54 × 49,629.75
  4. Step 4: Simplify right side
    85,438.23x = 5,851,622,473.82
  5. Step 5: Solve for x
    x = 5,851,622,473.82/85,438.23
  6. Step 6: Final answer
    x = 68,489.51

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1.5x scale

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.