Home / 105,517.33-145,608.18-57,761.45

Finding the Fourth Proportional to 105,517.33, 145,608.18 and 57,761.45

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Solution

The fourth proportional to 105,517.33, 145,608.18 and 57,761.45 is: 79,707.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,517.33 : 145,608.18 = 57,761.45 : x
  2. Step 2: Convert to fraction form
    105,517.33/145,608.18 = 57,761.45/x
  3. Step 3: Cross multiply
    105,517.33x = 145,608.18 × 57,761.45
  4. Step 4: Simplify right side
    105,517.33x = 8,410,539,608.66
  5. Step 5: Solve for x
    x = 8,410,539,608.66/105,517.33
  6. Step 6: Final answer
    x = 79,707.66

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1.5x scale

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.