Home / 77,972.48-117,004.80-28,759.04

Finding the Fourth Proportional to 77,972.48, 117,004.80 and 28,759.04

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Solution

The fourth proportional to 77,972.48, 117,004.80 and 28,759.04 is: 43,155.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,972.48 : 117,004.80 = 28,759.04 : x
  2. Step 2: Convert to fraction form
    77,972.48/117,004.80 = 28,759.04/x
  3. Step 3: Cross multiply
    77,972.48x = 117,004.80 × 28,759.04
  4. Step 4: Simplify right side
    77,972.48x = 3,364,945,723.39
  5. Step 5: Solve for x
    x = 3,364,945,723.39/77,972.48
  6. Step 6: Final answer
    x = 43,155.56

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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.