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Finding the Fourth Proportional to 84,958.77, 127,358.55 and 28,759.56

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Solution

The fourth proportional to 84,958.77, 127,358.55 and 28,759.56 is: 43,112.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,958.77 : 127,358.55 = 28,759.56 : x
  2. Step 2: Convert to fraction form
    84,958.77/127,358.55 = 28,759.56/x
  3. Step 3: Cross multiply
    84,958.77x = 127,358.55 × 28,759.56
  4. Step 4: Simplify right side
    84,958.77x = 3,662,775,860.24
  5. Step 5: Solve for x
    x = 3,662,775,860.24/84,958.77
  6. Step 6: Final answer
    x = 43,112.39

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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.