Home / 68,792.39-94,932.35-40,128.72

Finding the Fourth Proportional to 68,792.39, 94,932.35 and 40,128.72

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Solution

The fourth proportional to 68,792.39, 94,932.35 and 40,128.72 is: 55,376.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,792.39 : 94,932.35 = 40,128.72 : x
  2. Step 2: Convert to fraction form
    68,792.39/94,932.35 = 40,128.72/x
  3. Step 3: Cross multiply
    68,792.39x = 94,932.35 × 40,128.72
  4. Step 4: Simplify right side
    68,792.39x = 3,809,513,511.66
  5. Step 5: Solve for x
    x = 3,809,513,511.66/68,792.39
  6. Step 6: Final answer
    x = 55,376.96

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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.