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Finding the Fourth Proportional to 90,630, 125,077.08 and 50,893.68

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Solution

The fourth proportional to 90,630, 125,077.08 and 50,893.68 is: 70,237.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,630 : 125,077.08 = 50,893.68 : x
  2. Step 2: Convert to fraction form
    90,630/125,077.08 = 50,893.68/x
  3. Step 3: Cross multiply
    90,630x = 125,077.08 × 50,893.68
  4. Step 4: Simplify right side
    90,630x = 6,365,632,884.85
  5. Step 5: Solve for x
    x = 6,365,632,884.85/90,630
  6. Step 6: Final answer
    x = 70,237.59

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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.