Home / 68,691.32-94,783.16-40,015.72

Finding the Fourth Proportional to 68,691.32, 94,783.16 and 40,015.72

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Solution

The fourth proportional to 68,691.32, 94,783.16 and 40,015.72 is: 55,215.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,691.32 : 94,783.16 = 40,015.72 : x
  2. Step 2: Convert to fraction form
    68,691.32/94,783.16 = 40,015.72/x
  3. Step 3: Cross multiply
    68,691.32x = 94,783.16 × 40,015.72
  4. Step 4: Simplify right side
    68,691.32x = 3,792,816,391.28
  5. Step 5: Solve for x
    x = 3,792,816,391.28/68,691.32
  6. Step 6: Final answer
    x = 55,215.37

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1.5x scale

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.