Home / 72,489.06-100,040.94-40,226.71

Finding the Fourth Proportional to 72,489.06, 100,040.94 and 40,226.71

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Solution

The fourth proportional to 72,489.06, 100,040.94 and 40,226.71 is: 55,516.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,489.06 : 100,040.94 = 40,226.71 : x
  2. Step 2: Convert to fraction form
    72,489.06/100,040.94 = 40,226.71/x
  3. Step 3: Cross multiply
    72,489.06x = 100,040.94 × 40,226.71
  4. Step 4: Simplify right side
    72,489.06x = 4,024,317,881.51
  5. Step 5: Solve for x
    x = 4,024,317,881.51/72,489.06
  6. Step 6: Final answer
    x = 55,516.21

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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.