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Finding the Fourth Proportional to 90,364.58, 124,703.84 and 50,079

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Solution

The fourth proportional to 90,364.58, 124,703.84 and 50,079 is: 69,109.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,364.58 : 124,703.84 = 50,079 : x
  2. Step 2: Convert to fraction form
    90,364.58/124,703.84 = 50,079/x
  3. Step 3: Cross multiply
    90,364.58x = 124,703.84 × 50,079
  4. Step 4: Simplify right side
    90,364.58x = 6,245,043,603.36
  5. Step 5: Solve for x
    x = 6,245,043,603.36/90,364.58
  6. Step 6: Final answer
    x = 69,109.42

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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.