Home / 90,708.31-125,166.77-53,908.79

Finding the Fourth Proportional to 90,708.31, 125,166.77 and 53,908.79

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Solution

The fourth proportional to 90,708.31, 125,166.77 and 53,908.79 is: 74,387.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,708.31 : 125,166.77 = 53,908.79 : x
  2. Step 2: Convert to fraction form
    90,708.31/125,166.77 = 53,908.79/x
  3. Step 3: Cross multiply
    90,708.31x = 125,166.77 × 53,908.79
  4. Step 4: Simplify right side
    90,708.31x = 6,747,589,129.75
  5. Step 5: Solve for x
    x = 6,747,589,129.75/90,708.31
  6. Step 6: Final answer
    x = 74,387.78

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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.