Home / 85,015.28-117,174.12-63,757.64

Finding the Fourth Proportional to 85,015.28, 117,174.12 and 63,757.64

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Solution

The fourth proportional to 85,015.28, 117,174.12 and 63,757.64 is: 87,875.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,015.28 : 117,174.12 = 63,757.64 : x
  2. Step 2: Convert to fraction form
    85,015.28/117,174.12 = 63,757.64/x
  3. Step 3: Cross multiply
    85,015.28x = 117,174.12 × 63,757.64
  4. Step 4: Simplify right side
    85,015.28x = 7,470,745,360.28
  5. Step 5: Solve for x
    x = 7,470,745,360.28/85,015.28
  6. Step 6: Final answer
    x = 87,875.33

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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.