Home / 81,284.43-121,938.29-25,129.43

Finding the Fourth Proportional to 81,284.43, 121,938.29 and 25,129.43

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Solution

The fourth proportional to 81,284.43, 121,938.29 and 25,129.43 is: 37,697.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,284.43 : 121,938.29 = 25,129.43 : x
  2. Step 2: Convert to fraction form
    81,284.43/121,938.29 = 25,129.43/x
  3. Step 3: Cross multiply
    81,284.43x = 121,938.29 × 25,129.43
  4. Step 4: Simplify right side
    81,284.43x = 3,064,238,987.54
  5. Step 5: Solve for x
    x = 3,064,238,987.54/81,284.43
  6. Step 6: Final answer
    x = 37,697.74

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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.