Home / 85,504.11-117,995.31-47,778.36

Finding the Fourth Proportional to 85,504.11, 117,995.31 and 47,778.36

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Solution

The fourth proportional to 85,504.11, 117,995.31 and 47,778.36 is: 65,933.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,504.11 : 117,995.31 = 47,778.36 : x
  2. Step 2: Convert to fraction form
    85,504.11/117,995.31 = 47,778.36/x
  3. Step 3: Cross multiply
    85,504.11x = 117,995.31 × 47,778.36
  4. Step 4: Simplify right side
    85,504.11x = 5,637,622,399.49
  5. Step 5: Solve for x
    x = 5,637,622,399.49/85,504.11
  6. Step 6: Final answer
    x = 65,933.93

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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.