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Finding the Fourth Proportional to 101,651.90, 140,280.44 and 56,330.64

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Solution

The fourth proportional to 101,651.90, 140,280.44 and 56,330.64 is: 77,736.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,651.90 : 140,280.44 = 56,330.64 : x
  2. Step 2: Convert to fraction form
    101,651.90/140,280.44 = 56,330.64/x
  3. Step 3: Cross multiply
    101,651.90x = 140,280.44 × 56,330.64
  4. Step 4: Simplify right side
    101,651.90x = 7,902,086,263.28
  5. Step 5: Solve for x
    x = 7,902,086,263.28/101,651.90
  6. Step 6: Final answer
    x = 77,736.73

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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.