Home / 81,640.44-122,343.80-46,507.50

Finding the Fourth Proportional to 81,640.44, 122,343.80 and 46,507.50

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Solution

The fourth proportional to 81,640.44, 122,343.80 and 46,507.50 is: 69,694.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,640.44 : 122,343.80 = 46,507.50 : x
  2. Step 2: Convert to fraction form
    81,640.44/122,343.80 = 46,507.50/x
  3. Step 3: Cross multiply
    81,640.44x = 122,343.80 × 46,507.50
  4. Step 4: Simplify right side
    81,640.44x = 5,689,904,278.50
  5. Step 5: Solve for x
    x = 5,689,904,278.50/81,640.44
  6. Step 6: Final answer
    x = 69,694.68

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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.