Home / 80,717.04-121,076.28-28,126.44

Finding the Fourth Proportional to 80,717.04, 121,076.28 and 28,126.44

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Solution

The fourth proportional to 80,717.04, 121,076.28 and 28,126.44 is: 42,189.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,717.04 : 121,076.28 = 28,126.44 : x
  2. Step 2: Convert to fraction form
    80,717.04/121,076.28 = 28,126.44/x
  3. Step 3: Cross multiply
    80,717.04x = 121,076.28 × 28,126.44
  4. Step 4: Simplify right side
    80,717.04x = 3,405,444,724.84
  5. Step 5: Solve for x
    x = 3,405,444,724.84/80,717.04
  6. Step 6: Final answer
    x = 42,189.91

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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.