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Finding the Fourth Proportional to 69,322.96, 103,984.45 and 19,410.41

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Solution

The fourth proportional to 69,322.96, 103,984.45 and 19,410.41 is: 29,115.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,322.96 : 103,984.45 = 19,410.41 : x
  2. Step 2: Convert to fraction form
    69,322.96/103,984.45 = 19,410.41/x
  3. Step 3: Cross multiply
    69,322.96x = 103,984.45 × 19,410.41
  4. Step 4: Simplify right side
    69,322.96x = 2,018,380,808.12
  5. Step 5: Solve for x
    x = 2,018,380,808.12/69,322.96
  6. Step 6: Final answer
    x = 29,115.62

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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.