Home / 72,690.10-109,042.35-25,297.90

Finding the Fourth Proportional to 72,690.10, 109,042.35 and 25,297.90

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Solution

The fourth proportional to 72,690.10, 109,042.35 and 25,297.90 is: 37,949.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,690.10 : 109,042.35 = 25,297.90 : x
  2. Step 2: Convert to fraction form
    72,690.10/109,042.35 = 25,297.90/x
  3. Step 3: Cross multiply
    72,690.10x = 109,042.35 × 25,297.90
  4. Step 4: Simplify right side
    72,690.10x = 2,758,542,466.07
  5. Step 5: Solve for x
    x = 2,758,542,466.07/72,690.10
  6. Step 6: Final answer
    x = 37,949.36

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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.