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Finding the Fourth Proportional to 69,376, 104,060.34 and 19,459.56

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Solution

The fourth proportional to 69,376, 104,060.34 and 19,459.56 is: 29,188.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,376 : 104,060.34 = 19,459.56 : x
  2. Step 2: Convert to fraction form
    69,376/104,060.34 = 19,459.56/x
  3. Step 3: Cross multiply
    69,376x = 104,060.34 × 19,459.56
  4. Step 4: Simplify right side
    69,376x = 2,024,968,429.85
  5. Step 5: Solve for x
    x = 2,024,968,429.85/69,376
  6. Step 6: Final answer
    x = 29,188.31

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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.