Home / 68,065.45-102,103.04-18,145.28

Finding the Fourth Proportional to 68,065.45, 102,103.04 and 18,145.28

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Solution

The fourth proportional to 68,065.45, 102,103.04 and 18,145.28 is: 27,219.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,065.45 : 102,103.04 = 18,145.28 : x
  2. Step 2: Convert to fraction form
    68,065.45/102,103.04 = 18,145.28/x
  3. Step 3: Cross multiply
    68,065.45x = 102,103.04 × 18,145.28
  4. Step 4: Simplify right side
    68,065.45x = 1,852,688,550.27
  5. Step 5: Solve for x
    x = 1,852,688,550.27/68,065.45
  6. Step 6: Final answer
    x = 27,219.22

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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.