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Finding the Fourth Proportional to 69,420.29, 104,134.47 and 19,504.28

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Solution

The fourth proportional to 69,420.29, 104,134.47 and 19,504.28 is: 29,257.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,420.29 : 104,134.47 = 19,504.28 : x
  2. Step 2: Convert to fraction form
    69,420.29/104,134.47 = 19,504.28/x
  3. Step 3: Cross multiply
    69,420.29x = 104,134.47 × 19,504.28
  4. Step 4: Simplify right side
    69,420.29x = 2,031,067,339.86
  5. Step 5: Solve for x
    x = 2,031,067,339.86/69,420.29
  6. Step 6: Final answer
    x = 29,257.55

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1.5x scale

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.