Home / 81,421.29-122,132.54-25,260.34

Finding the Fourth Proportional to 81,421.29, 122,132.54 and 25,260.34

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Solution

The fourth proportional to 81,421.29, 122,132.54 and 25,260.34 is: 37,890.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,421.29 : 122,132.54 = 25,260.34 : x
  2. Step 2: Convert to fraction form
    81,421.29/122,132.54 = 25,260.34/x
  3. Step 3: Cross multiply
    81,421.29x = 122,132.54 × 25,260.34
  4. Step 4: Simplify right side
    81,421.29x = 3,085,109,485.46
  5. Step 5: Solve for x
    x = 3,085,109,485.46/81,421.29
  6. Step 6: Final answer
    x = 37,890.70

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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.