Home / 68,928.21-102,925.41-54,728.91

Finding the Fourth Proportional to 68,928.21, 102,925.41 and 54,728.91

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Solution

The fourth proportional to 68,928.21, 102,925.41 and 54,728.91 is: 81,722.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,928.21 : 102,925.41 = 54,728.91 : x
  2. Step 2: Convert to fraction form
    68,928.21/102,925.41 = 54,728.91/x
  3. Step 3: Cross multiply
    68,928.21x = 102,925.41 × 54,728.91
  4. Step 4: Simplify right side
    68,928.21x = 5,632,995,295.37
  5. Step 5: Solve for x
    x = 5,632,995,295.37/68,928.21
  6. Step 6: Final answer
    x = 81,722.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.