Home / 61,092.12-91,615.68-21,100.92

Finding the Fourth Proportional to 61,092.12, 91,615.68 and 21,100.92

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Solution

The fourth proportional to 61,092.12, 91,615.68 and 21,100.92 is: 31,643.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,092.12 : 91,615.68 = 21,100.92 : x
  2. Step 2: Convert to fraction form
    61,092.12/91,615.68 = 21,100.92/x
  3. Step 3: Cross multiply
    61,092.12x = 91,615.68 × 21,100.92
  4. Step 4: Simplify right side
    61,092.12x = 1,933,175,134.43
  5. Step 5: Solve for x
    x = 1,933,175,134.43/61,092.12
  6. Step 6: Final answer
    x = 31,643.61

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1.5x scale

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.