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Finding the Fourth Proportional to 69,490.41, 104,238.12 and 19,574.87

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Solution

The fourth proportional to 69,490.41, 104,238.12 and 19,574.87 is: 29,363.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,490.41 : 104,238.12 = 19,574.87 : x
  2. Step 2: Convert to fraction form
    69,490.41/104,238.12 = 19,574.87/x
  3. Step 3: Cross multiply
    69,490.41x = 104,238.12 × 19,574.87
  4. Step 4: Simplify right side
    69,490.41x = 2,040,447,035.10
  5. Step 5: Solve for x
    x = 2,040,447,035.10/69,490.41
  6. Step 6: Final answer
    x = 29,363.00

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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.