Home / 105,517.83-145,608.87-57,761.95

Finding the Fourth Proportional to 105,517.83, 145,608.87 and 57,761.95

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Solution

The fourth proportional to 105,517.83, 145,608.87 and 57,761.95 is: 79,708.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,517.83 : 145,608.87 = 57,761.95 : x
  2. Step 2: Convert to fraction form
    105,517.83/145,608.87 = 57,761.95/x
  3. Step 3: Cross multiply
    105,517.83x = 145,608.87 × 57,761.95
  4. Step 4: Simplify right side
    105,517.83x = 8,410,652,268.50
  5. Step 5: Solve for x
    x = 8,410,652,268.50/105,517.83
  6. Step 6: Final answer
    x = 79,708.35

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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.