Home / 85,695.08-128,568.87-38,350.02

Finding the Fourth Proportional to 85,695.08, 128,568.87 and 38,350.02

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Solution

The fourth proportional to 85,695.08, 128,568.87 and 38,350.02 is: 57,536.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,695.08 : 128,568.87 = 38,350.02 : x
  2. Step 2: Convert to fraction form
    85,695.08/128,568.87 = 38,350.02/x
  3. Step 3: Cross multiply
    85,695.08x = 128,568.87 × 38,350.02
  4. Step 4: Simplify right side
    85,695.08x = 4,930,618,735.88
  5. Step 5: Solve for x
    x = 4,930,618,735.88/85,695.08
  6. Step 6: Final answer
    x = 57,536.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.