Home / 85,208.40-127,716.60-40,856.40

Finding the Fourth Proportional to 85,208.40, 127,716.60 and 40,856.40

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Solution

The fourth proportional to 85,208.40, 127,716.60 and 40,856.40 is: 61,238.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,208.40 : 127,716.60 = 40,856.40 : x
  2. Step 2: Convert to fraction form
    85,208.40/127,716.60 = 40,856.40/x
  3. Step 3: Cross multiply
    85,208.40x = 127,716.60 × 40,856.40
  4. Step 4: Simplify right side
    85,208.40x = 5,218,040,496.24
  5. Step 5: Solve for x
    x = 5,218,040,496.24/85,208.40
  6. Step 6: Final answer
    x = 61,238.57

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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.