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Finding the Fourth Proportional to 90,634, 125,082.60 and 50,897.68

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Solution

The fourth proportional to 90,634, 125,082.60 and 50,897.68 is: 70,243.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,634 : 125,082.60 = 50,897.68 : x
  2. Step 2: Convert to fraction form
    90,634/125,082.60 = 50,897.68/x
  3. Step 3: Cross multiply
    90,634x = 125,082.60 × 50,897.68
  4. Step 4: Simplify right side
    90,634x = 6,366,414,148.37
  5. Step 5: Solve for x
    x = 6,366,414,148.37/90,634
  6. Step 6: Final answer
    x = 70,243.11

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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.