Home / 85,707.28-128,644.04-41,365.24

Finding the Fourth Proportional to 85,707.28, 128,644.04 and 41,365.24

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Solution

The fourth proportional to 85,707.28, 128,644.04 and 41,365.24 is: 62,087.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,707.28 : 128,644.04 = 41,365.24 : x
  2. Step 2: Convert to fraction form
    85,707.28/128,644.04 = 41,365.24/x
  3. Step 3: Cross multiply
    85,707.28x = 128,644.04 × 41,365.24
  4. Step 4: Simplify right side
    85,707.28x = 5,321,391,589.17
  5. Step 5: Solve for x
    x = 5,321,391,589.17/85,707.28
  6. Step 6: Final answer
    x = 62,087.98

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1.5x scale

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.