Home / 72,020.58-99,393.39-40,195.68

Finding the Fourth Proportional to 72,020.58, 99,393.39 and 40,195.68

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Solution

The fourth proportional to 72,020.58, 99,393.39 and 40,195.68 is: 55,472.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,020.58 : 99,393.39 = 40,195.68 : x
  2. Step 2: Convert to fraction form
    72,020.58/99,393.39 = 40,195.68/x
  3. Step 3: Cross multiply
    72,020.58x = 99,393.39 × 40,195.68
  4. Step 4: Simplify right side
    72,020.58x = 3,995,184,898.56
  5. Step 5: Solve for x
    x = 3,995,184,898.56/72,020.58
  6. Step 6: Final answer
    x = 55,472.82

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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.