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Finding the Fourth Proportional to 101,686.99, 140,333.19 and 58,650.47

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Solution

The fourth proportional to 101,686.99, 140,333.19 and 58,650.47 is: 80,940.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,686.99 : 140,333.19 = 58,650.47 : x
  2. Step 2: Convert to fraction form
    101,686.99/140,333.19 = 58,650.47/x
  3. Step 3: Cross multiply
    101,686.99x = 140,333.19 × 58,650.47
  4. Step 4: Simplify right side
    101,686.99x = 8,230,607,550.10
  5. Step 5: Solve for x
    x = 8,230,607,550.10/101,686.99
  6. Step 6: Final answer
    x = 80,940.62

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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.