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Finding the Fourth Proportional to 69,710.72, 104,580.48 and 28,160.96

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Solution

The fourth proportional to 69,710.72, 104,580.48 and 28,160.96 is: 42,247.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,710.72 : 104,580.48 = 28,160.96 : x
  2. Step 2: Convert to fraction form
    69,710.72/104,580.48 = 28,160.96/x
  3. Step 3: Cross multiply
    69,710.72x = 104,580.48 × 28,160.96
  4. Step 4: Simplify right side
    69,710.72x = 2,945,086,714.06
  5. Step 5: Solve for x
    x = 2,945,086,714.06/69,710.72
  6. Step 6: Final answer
    x = 42,247.26

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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.