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Finding the Fourth Proportional to 69,612.80, 104,409.93 and 19,697.27

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Solution

The fourth proportional to 69,612.80, 104,409.93 and 19,697.27 is: 29,543.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,612.80 : 104,409.93 = 19,697.27 : x
  2. Step 2: Convert to fraction form
    69,612.80/104,409.93 = 19,697.27/x
  3. Step 3: Cross multiply
    69,612.80x = 104,409.93 × 19,697.27
  4. Step 4: Simplify right side
    69,612.80x = 2,056,590,059.84
  5. Step 5: Solve for x
    x = 2,056,590,059.84/69,612.80
  6. Step 6: Final answer
    x = 29,543.28

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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.