Home / 80,811.51-121,236.36-25,407.51

Finding the Fourth Proportional to 80,811.51, 121,236.36 and 25,407.51

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Solution

The fourth proportional to 80,811.51, 121,236.36 and 25,407.51 is: 38,117.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,811.51 : 121,236.36 = 25,407.51 : x
  2. Step 2: Convert to fraction form
    80,811.51/121,236.36 = 25,407.51/x
  3. Step 3: Cross multiply
    80,811.51x = 121,236.36 × 25,407.51
  4. Step 4: Simplify right side
    80,811.51x = 3,080,314,029.06
  5. Step 5: Solve for x
    x = 3,080,314,029.06/80,811.51
  6. Step 6: Final answer
    x = 38,117.27

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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.