Home / 91,244.82-136,872.09-28,920.18

Finding the Fourth Proportional to 91,244.82, 136,872.09 and 28,920.18

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Solution

The fourth proportional to 91,244.82, 136,872.09 and 28,920.18 is: 43,381.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,244.82 : 136,872.09 = 28,920.18 : x
  2. Step 2: Convert to fraction form
    91,244.82/136,872.09 = 28,920.18/x
  3. Step 3: Cross multiply
    91,244.82x = 136,872.09 × 28,920.18
  4. Step 4: Simplify right side
    91,244.82x = 3,958,365,479.78
  5. Step 5: Solve for x
    x = 3,958,365,479.78/91,244.82
  6. Step 6: Final answer
    x = 43,381.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.