Home / 85,750.08-128,643.60-26,584.56

Finding the Fourth Proportional to 85,750.08, 128,643.60 and 26,584.56

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Solution

The fourth proportional to 85,750.08, 128,643.60 and 26,584.56 is: 39,882.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,750.08 : 128,643.60 = 26,584.56 : x
  2. Step 2: Convert to fraction form
    85,750.08/128,643.60 = 26,584.56/x
  3. Step 3: Cross multiply
    85,750.08x = 128,643.60 × 26,584.56
  4. Step 4: Simplify right side
    85,750.08x = 3,419,933,502.82
  5. Step 5: Solve for x
    x = 3,419,933,502.82/85,750.08
  6. Step 6: Final answer
    x = 39,882.57

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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.