Home / 105,708.52-145,876.69-57,961.75

Finding the Fourth Proportional to 105,708.52, 145,876.69 and 57,961.75

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Solution

The fourth proportional to 105,708.52, 145,876.69 and 57,961.75 is: 79,986.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,708.52 : 145,876.69 = 57,961.75 : x
  2. Step 2: Convert to fraction form
    105,708.52/145,876.69 = 57,961.75/x
  3. Step 3: Cross multiply
    105,708.52x = 145,876.69 × 57,961.75
  4. Step 4: Simplify right side
    105,708.52x = 8,455,268,236.61
  5. Step 5: Solve for x
    x = 8,455,268,236.61/105,708.52
  6. Step 6: Final answer
    x = 79,986.63

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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.