Home / 68,155.72-102,243.18-28,688.20

Finding the Fourth Proportional to 68,155.72, 102,243.18 and 28,688.20

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Solution

The fourth proportional to 68,155.72, 102,243.18 and 28,688.20 is: 43,036.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,155.72 : 102,243.18 = 28,688.20 : x
  2. Step 2: Convert to fraction form
    68,155.72/102,243.18 = 28,688.20/x
  3. Step 3: Cross multiply
    68,155.72x = 102,243.18 × 28,688.20
  4. Step 4: Simplify right side
    68,155.72x = 2,933,172,796.48
  5. Step 5: Solve for x
    x = 2,933,172,796.48/68,155.72
  6. Step 6: Final answer
    x = 43,036.34

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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.