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Finding the Fourth Proportional to 101,711.75, 140,370.48 and 56,403.95

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Solution

The fourth proportional to 101,711.75, 140,370.48 and 56,403.95 is: 77,842.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,711.75 : 140,370.48 = 56,403.95 : x
  2. Step 2: Convert to fraction form
    101,711.75/140,370.48 = 56,403.95/x
  3. Step 3: Cross multiply
    101,711.75x = 140,370.48 × 56,403.95
  4. Step 4: Simplify right side
    101,711.75x = 7,917,448,833.54
  5. Step 5: Solve for x
    x = 7,917,448,833.54/101,711.75
  6. Step 6: Final answer
    x = 77,842.03

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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.