Home / 81,419.29-122,129.54-25,258.34

Finding the Fourth Proportional to 81,419.29, 122,129.54 and 25,258.34

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Solution

The fourth proportional to 81,419.29, 122,129.54 and 25,258.34 is: 37,887.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,419.29 : 122,129.54 = 25,258.34 : x
  2. Step 2: Convert to fraction form
    81,419.29/122,129.54 = 25,258.34/x
  3. Step 3: Cross multiply
    81,419.29x = 122,129.54 × 25,258.34
  4. Step 4: Simplify right side
    81,419.29x = 3,084,789,445.36
  5. Step 5: Solve for x
    x = 3,084,789,445.36/81,419.29
  6. Step 6: Final answer
    x = 37,887.70

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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.