Home / 80,845.47-121,323.69-28,255.01

Finding the Fourth Proportional to 80,845.47, 121,323.69 and 28,255.01

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Solution

The fourth proportional to 80,845.47, 121,323.69 and 28,255.01 is: 42,401.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,845.47 : 121,323.69 = 28,255.01 : x
  2. Step 2: Convert to fraction form
    80,845.47/121,323.69 = 28,255.01/x
  3. Step 3: Cross multiply
    80,845.47x = 121,323.69 × 28,255.01
  4. Step 4: Simplify right side
    80,845.47x = 3,428,001,467.57
  5. Step 5: Solve for x
    x = 3,428,001,467.57/80,845.47
  6. Step 6: Final answer
    x = 42,401.90

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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.