Home / 69,092.90-103,638.19-31,121.05

Finding the Fourth Proportional to 69,092.90, 103,638.19 and 31,121.05

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Solution

The fourth proportional to 69,092.90, 103,638.19 and 31,121.05 is: 46,681.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,092.90 : 103,638.19 = 31,121.05 : x
  2. Step 2: Convert to fraction form
    69,092.90/103,638.19 = 31,121.05/x
  3. Step 3: Cross multiply
    69,092.90x = 103,638.19 × 31,121.05
  4. Step 4: Simplify right side
    69,092.90x = 3,225,328,619.10
  5. Step 5: Solve for x
    x = 3,225,328,619.10/69,092.90
  6. Step 6: Final answer
    x = 46,681.05

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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.