Home / 81,418.29-122,128.04-25,257.34

Finding the Fourth Proportional to 81,418.29, 122,128.04 and 25,257.34

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Solution

The fourth proportional to 81,418.29, 122,128.04 and 25,257.34 is: 37,886.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,418.29 : 122,128.04 = 25,257.34 : x
  2. Step 2: Convert to fraction form
    81,418.29/122,128.04 = 25,257.34/x
  3. Step 3: Cross multiply
    81,418.29x = 122,128.04 × 25,257.34
  4. Step 4: Simplify right side
    81,418.29x = 3,084,629,429.81
  5. Step 5: Solve for x
    x = 3,084,629,429.81/81,418.29
  6. Step 6: Final answer
    x = 37,886.20

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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.