Home / 91,112.04-136,669.68-28,782

Finding the Fourth Proportional to 91,112.04, 136,669.68 and 28,782

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Solution

The fourth proportional to 91,112.04, 136,669.68 and 28,782 is: 43,173.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,112.04 : 136,669.68 = 28,782 : x
  2. Step 2: Convert to fraction form
    91,112.04/136,669.68 = 28,782/x
  3. Step 3: Cross multiply
    91,112.04x = 136,669.68 × 28,782
  4. Step 4: Simplify right side
    91,112.04x = 3,933,626,729.76
  5. Step 5: Solve for x
    x = 3,933,626,729.76/91,112.04
  6. Step 6: Final answer
    x = 43,173.51

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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.