Home / 81,416.76-122,132.88-25,257.48

Finding the Fourth Proportional to 81,416.76, 122,132.88 and 25,257.48

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Solution

The fourth proportional to 81,416.76, 122,132.88 and 25,257.48 is: 37,888.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,416.76 : 122,132.88 = 25,257.48 : x
  2. Step 2: Convert to fraction form
    81,416.76/122,132.88 = 25,257.48/x
  3. Step 3: Cross multiply
    81,416.76x = 122,132.88 × 25,257.48
  4. Step 4: Simplify right side
    81,416.76x = 3,084,768,773.94
  5. Step 5: Solve for x
    x = 3,084,768,773.94/81,416.76
  6. Step 6: Final answer
    x = 37,888.62

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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.