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Finding the Fourth Proportional to 90,951, 125,507.50 and 50,113.86

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Solution

The fourth proportional to 90,951, 125,507.50 and 50,113.86 is: 69,154.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,951 : 125,507.50 = 50,113.86 : x
  2. Step 2: Convert to fraction form
    90,951/125,507.50 = 50,113.86/x
  3. Step 3: Cross multiply
    90,951x = 125,507.50 × 50,113.86
  4. Step 4: Simplify right side
    90,951x = 6,289,665,283.95
  5. Step 5: Solve for x
    x = 6,289,665,283.95/90,951
  6. Step 6: Final answer
    x = 69,154.44

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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.