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Finding the Fourth Proportional to 90,953, 125,510.26 and 50,115.86

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Solution

The fourth proportional to 90,953, 125,510.26 and 50,115.86 is: 69,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,953 : 125,510.26 = 50,115.86 : x
  2. Step 2: Convert to fraction form
    90,953/125,510.26 = 50,115.86/x
  3. Step 3: Cross multiply
    90,953x = 125,510.26 × 50,115.86
  4. Step 4: Simplify right side
    90,953x = 6,290,054,618.72
  5. Step 5: Solve for x
    x = 6,290,054,618.72/90,953
  6. Step 6: Final answer
    x = 69,157.20

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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.