Home / 66,739.14-100,124.91-19,991.61

Finding the Fourth Proportional to 66,739.14, 100,124.91 and 19,991.61

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Solution

The fourth proportional to 66,739.14, 100,124.91 and 19,991.61 is: 29,992.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,739.14 : 100,124.91 = 19,991.61 : x
  2. Step 2: Convert to fraction form
    66,739.14/100,124.91 = 19,991.61/x
  3. Step 3: Cross multiply
    66,739.14x = 100,124.91 × 19,991.61
  4. Step 4: Simplify right side
    66,739.14x = 2,001,658,152.01
  5. Step 5: Solve for x
    x = 2,001,658,152.01/66,739.14
  6. Step 6: Final answer
    x = 29,992.27

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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.