Home / 51,361.12-77,039.52-18,081.28

Finding the Fourth Proportional to 51,361.12, 77,039.52 and 18,081.28

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Solution

The fourth proportional to 51,361.12, 77,039.52 and 18,081.28 is: 27,121.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,361.12 : 77,039.52 = 18,081.28 : x
  2. Step 2: Convert to fraction form
    51,361.12/77,039.52 = 18,081.28/x
  3. Step 3: Cross multiply
    51,361.12x = 77,039.52 × 18,081.28
  4. Step 4: Simplify right side
    51,361.12x = 1,392,973,132.19
  5. Step 5: Solve for x
    x = 1,392,973,132.19/51,361.12
  6. Step 6: Final answer
    x = 27,121.16

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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.