Home / 72,079.80-99,470.34-40,249.86

Finding the Fourth Proportional to 72,079.80, 99,470.34 and 40,249.86

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Solution

The fourth proportional to 72,079.80, 99,470.34 and 40,249.86 is: 55,544.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,079.80 : 99,470.34 = 40,249.86 : x
  2. Step 2: Convert to fraction form
    72,079.80/99,470.34 = 40,249.86/x
  3. Step 3: Cross multiply
    72,079.80x = 99,470.34 × 40,249.86
  4. Step 4: Simplify right side
    72,079.80x = 4,003,667,259.15
  5. Step 5: Solve for x
    x = 4,003,667,259.15/72,079.80
  6. Step 6: Final answer
    x = 55,544.93

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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.