Home / 80,979.11-111,751.34-45,168.20

Finding the Fourth Proportional to 80,979.11, 111,751.34 and 45,168.20

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Solution

The fourth proportional to 80,979.11, 111,751.34 and 45,168.20 is: 62,332.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,979.11 : 111,751.34 = 45,168.20 : x
  2. Step 2: Convert to fraction form
    80,979.11/111,751.34 = 45,168.20/x
  3. Step 3: Cross multiply
    80,979.11x = 111,751.34 × 45,168.20
  4. Step 4: Simplify right side
    80,979.11x = 5,047,606,090.79
  5. Step 5: Solve for x
    x = 5,047,606,090.79/80,979.11
  6. Step 6: Final answer
    x = 62,332.20

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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.