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Finding the Fourth Proportional to 101,520.62, 140,102.19 and 55,583.48

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Solution

The fourth proportional to 101,520.62, 140,102.19 and 55,583.48 is: 76,707.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,520.62 : 140,102.19 = 55,583.48 : x
  2. Step 2: Convert to fraction form
    101,520.62/140,102.19 = 55,583.48/x
  3. Step 3: Cross multiply
    101,520.62x = 140,102.19 × 55,583.48
  4. Step 4: Simplify right side
    101,520.62x = 7,787,367,275.82
  5. Step 5: Solve for x
    x = 7,787,367,275.82/101,520.62
  6. Step 6: Final answer
    x = 76,707.25

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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.