Home / 68,661.36-102,857.04-45,216.72

Finding the Fourth Proportional to 68,661.36, 102,857.04 and 45,216.72

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Solution

The fourth proportional to 68,661.36, 102,857.04 and 45,216.72 is: 67,736.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,661.36 : 102,857.04 = 45,216.72 : x
  2. Step 2: Convert to fraction form
    68,661.36/102,857.04 = 45,216.72/x
  3. Step 3: Cross multiply
    68,661.36x = 102,857.04 × 45,216.72
  4. Step 4: Simplify right side
    68,661.36x = 4,650,857,977.71
  5. Step 5: Solve for x
    x = 4,650,857,977.71/68,661.36
  6. Step 6: Final answer
    x = 67,736.18

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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.