Home / 80,979.60-111,803.88-50,806.32

Finding the Fourth Proportional to 80,979.60, 111,803.88 and 50,806.32

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Solution

The fourth proportional to 80,979.60, 111,803.88 and 50,806.32 is: 70,145.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,979.60 : 111,803.88 = 50,806.32 : x
  2. Step 2: Convert to fraction form
    80,979.60/111,803.88 = 50,806.32/x
  3. Step 3: Cross multiply
    80,979.60x = 111,803.88 × 50,806.32
  4. Step 4: Simplify right side
    80,979.60x = 5,680,343,704.52
  5. Step 5: Solve for x
    x = 5,680,343,704.52/80,979.60
  6. Step 6: Final answer
    x = 70,145.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.