Home / 85,723.40-128,585.10-26,558.60

Finding the Fourth Proportional to 85,723.40, 128,585.10 and 26,558.60

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Solution

The fourth proportional to 85,723.40, 128,585.10 and 26,558.60 is: 39,837.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,723.40 : 128,585.10 = 26,558.60 : x
  2. Step 2: Convert to fraction form
    85,723.40/128,585.10 = 26,558.60/x
  3. Step 3: Cross multiply
    85,723.40x = 128,585.10 × 26,558.60
  4. Step 4: Simplify right side
    85,723.40x = 3,415,040,236.86
  5. Step 5: Solve for x
    x = 3,415,040,236.86/85,723.40
  6. Step 6: Final answer
    x = 39,837.90

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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.