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Finding the Fourth Proportional to 69,586.80, 104,384.56 and 19,670.72

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Solution

The fourth proportional to 69,586.80, 104,384.56 and 19,670.72 is: 29,507.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,586.80 : 104,384.56 = 19,670.72 : x
  2. Step 2: Convert to fraction form
    69,586.80/104,384.56 = 19,670.72/x
  3. Step 3: Cross multiply
    69,586.80x = 104,384.56 × 19,670.72
  4. Step 4: Simplify right side
    69,586.80x = 2,053,319,452.08
  5. Step 5: Solve for x
    x = 2,053,319,452.08/69,586.80
  6. Step 6: Final answer
    x = 29,507.31

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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.