Home / 69,702.20-104,557.30-19,778.40

Finding the Fourth Proportional to 69,702.20, 104,557.30 and 19,778.40

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Solution

The fourth proportional to 69,702.20, 104,557.30 and 19,778.40 is: 29,668.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,702.20 : 104,557.30 = 19,778.40 : x
  2. Step 2: Convert to fraction form
    69,702.20/104,557.30 = 19,778.40/x
  3. Step 3: Cross multiply
    69,702.20x = 104,557.30 × 19,778.40
  4. Step 4: Simplify right side
    69,702.20x = 2,067,976,102.32
  5. Step 5: Solve for x
    x = 2,067,976,102.32/69,702.20
  6. Step 6: Final answer
    x = 29,668.74

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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.