Home / 66,976.12-92,429.94-40,123

Finding the Fourth Proportional to 66,976.12, 92,429.94 and 40,123

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Solution

The fourth proportional to 66,976.12, 92,429.94 and 40,123 is: 55,371.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,976.12 : 92,429.94 = 40,123 : x
  2. Step 2: Convert to fraction form
    66,976.12/92,429.94 = 40,123/x
  3. Step 3: Cross multiply
    66,976.12x = 92,429.94 × 40,123
  4. Step 4: Simplify right side
    66,976.12x = 3,708,566,482.62
  5. Step 5: Solve for x
    x = 3,708,566,482.62/66,976.12
  6. Step 6: Final answer
    x = 55,371.47

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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.