Home / 81,416.70-122,142.48-25,255.60

Finding the Fourth Proportional to 81,416.70, 122,142.48 and 25,255.60

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Solution

The fourth proportional to 81,416.70, 122,142.48 and 25,255.60 is: 37,888.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,416.70 : 122,142.48 = 25,255.60 : x
  2. Step 2: Convert to fraction form
    81,416.70/122,142.48 = 25,255.60/x
  3. Step 3: Cross multiply
    81,416.70x = 122,142.48 × 25,255.60
  4. Step 4: Simplify right side
    81,416.70x = 3,084,781,617.89
  5. Step 5: Solve for x
    x = 3,084,781,617.89/81,416.70
  6. Step 6: Final answer
    x = 37,888.81

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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.