Home / 81,369.11-122,065.21-25,213.63

Finding the Fourth Proportional to 81,369.11, 122,065.21 and 25,213.63

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Solution

The fourth proportional to 81,369.11, 122,065.21 and 25,213.63 is: 37,824.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,369.11 : 122,065.21 = 25,213.63 : x
  2. Step 2: Convert to fraction form
    81,369.11/122,065.21 = 25,213.63/x
  3. Step 3: Cross multiply
    81,369.11x = 122,065.21 × 25,213.63
  4. Step 4: Simplify right side
    81,369.11x = 3,077,707,040.81
  5. Step 5: Solve for x
    x = 3,077,707,040.81/81,369.11
  6. Step 6: Final answer
    x = 37,824.02

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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.