Home / 80,744-121,120.44-30,828.16

Finding the Fourth Proportional to 80,744, 121,120.44 and 30,828.16

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Solution

The fourth proportional to 80,744, 121,120.44 and 30,828.16 is: 46,243.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,744 : 121,120.44 = 30,828.16 : x
  2. Step 2: Convert to fraction form
    80,744/121,120.44 = 30,828.16/x
  3. Step 3: Cross multiply
    80,744x = 121,120.44 × 30,828.16
  4. Step 4: Simplify right side
    80,744x = 3,733,920,303.59
  5. Step 5: Solve for x
    x = 3,733,920,303.59/80,744
  6. Step 6: Final answer
    x = 46,243.94

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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.