Home / 85,474.23-117,936.16-49,645.70

Finding the Fourth Proportional to 85,474.23, 117,936.16 and 49,645.70

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Solution

The fourth proportional to 85,474.23, 117,936.16 and 49,645.70 is: 68,500.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,474.23 : 117,936.16 = 49,645.70 : x
  2. Step 2: Convert to fraction form
    85,474.23/117,936.16 = 49,645.70/x
  3. Step 3: Cross multiply
    85,474.23x = 117,936.16 × 49,645.70
  4. Step 4: Simplify right side
    85,474.23x = 5,855,023,218.51
  5. Step 5: Solve for x
    x = 5,855,023,218.51/85,474.23
  6. Step 6: Final answer
    x = 68,500.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.