Home / 72,161.82-99,581.46-40,330.92

Finding the Fourth Proportional to 72,161.82, 99,581.46 and 40,330.92

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Solution

The fourth proportional to 72,161.82, 99,581.46 and 40,330.92 is: 55,655.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,161.82 : 99,581.46 = 40,330.92 : x
  2. Step 2: Convert to fraction form
    72,161.82/99,581.46 = 40,330.92/x
  3. Step 3: Cross multiply
    72,161.82x = 99,581.46 × 40,330.92
  4. Step 4: Simplify right side
    72,161.82x = 4,016,211,896.74
  5. Step 5: Solve for x
    x = 4,016,211,896.74/72,161.82
  6. Step 6: Final answer
    x = 55,655.63

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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.