Home / 69,064.31-103,586.21-19,139.20

Finding the Fourth Proportional to 69,064.31, 103,586.21 and 19,139.20

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Solution

The fourth proportional to 69,064.31, 103,586.21 and 19,139.20 is: 28,705.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,064.31 : 103,586.21 = 19,139.20 : x
  2. Step 2: Convert to fraction form
    69,064.31/103,586.21 = 19,139.20/x
  3. Step 3: Cross multiply
    69,064.31x = 103,586.21 × 19,139.20
  4. Step 4: Simplify right side
    69,064.31x = 1,982,557,137.65
  5. Step 5: Solve for x
    x = 1,982,557,137.65/69,064.31
  6. Step 6: Final answer
    x = 28,705.96

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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.