Home / 80,767.86-121,151.91-21,603.54

Finding the Fourth Proportional to 80,767.86, 121,151.91 and 21,603.54

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Solution

The fourth proportional to 80,767.86, 121,151.91 and 21,603.54 is: 32,405.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,767.86 : 121,151.91 = 21,603.54 : x
  2. Step 2: Convert to fraction form
    80,767.86/121,151.91 = 21,603.54/x
  3. Step 3: Cross multiply
    80,767.86x = 121,151.91 × 21,603.54
  4. Step 4: Simplify right side
    80,767.86x = 2,617,310,133.76
  5. Step 5: Solve for x
    x = 2,617,310,133.76/80,767.86
  6. Step 6: Final answer
    x = 32,405.34

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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.