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Finding the Fourth Proportional to 107,695.38, 161,543 and 28,807.56

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Solution

The fourth proportional to 107,695.38, 161,543 and 28,807.56 is: 43,211.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,695.38 : 161,543 = 28,807.56 : x
  2. Step 2: Convert to fraction form
    107,695.38/161,543 = 28,807.56/x
  3. Step 3: Cross multiply
    107,695.38x = 161,543 × 28,807.56
  4. Step 4: Simplify right side
    107,695.38x = 4,653,659,665.08
  5. Step 5: Solve for x
    x = 4,653,659,665.08/107,695.38
  6. Step 6: Final answer
    x = 43,211.32

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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.