Home / 68,632.63-102,945.90-18,712.75

Finding the Fourth Proportional to 68,632.63, 102,945.90 and 18,712.75

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Solution

The fourth proportional to 68,632.63, 102,945.90 and 18,712.75 is: 28,068.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,632.63 : 102,945.90 = 18,712.75 : x
  2. Step 2: Convert to fraction form
    68,632.63/102,945.90 = 18,712.75/x
  3. Step 3: Cross multiply
    68,632.63x = 102,945.90 × 18,712.75
  4. Step 4: Simplify right side
    68,632.63x = 1,926,400,890.23
  5. Step 5: Solve for x
    x = 1,926,400,890.23/68,632.63
  6. Step 6: Final answer
    x = 28,068.29

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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.