Home / 66,786.92-100,157.32-19,389.18

Finding the Fourth Proportional to 66,786.92, 100,157.32 and 19,389.18

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Solution

The fourth proportional to 66,786.92, 100,157.32 and 19,389.18 is: 29,077.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,786.92 : 100,157.32 = 19,389.18 : x
  2. Step 2: Convert to fraction form
    66,786.92/100,157.32 = 19,389.18/x
  3. Step 3: Cross multiply
    66,786.92x = 100,157.32 × 19,389.18
  4. Step 4: Simplify right side
    66,786.92x = 1,941,968,305.80
  5. Step 5: Solve for x
    x = 1,941,968,305.80/66,786.92
  6. Step 6: Final answer
    x = 29,077.08

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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.