Home / 90,633.60-125,072.60-50,345.56

Finding the Fourth Proportional to 90,633.60, 125,072.60 and 50,345.56

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Solution

The fourth proportional to 90,633.60, 125,072.60 and 50,345.56 is: 69,475.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,633.60 : 125,072.60 = 50,345.56 : x
  2. Step 2: Convert to fraction form
    90,633.60/125,072.60 = 50,345.56/x
  3. Step 3: Cross multiply
    90,633.60x = 125,072.60 × 50,345.56
  4. Step 4: Simplify right side
    90,633.60x = 6,296,850,087.66
  5. Step 5: Solve for x
    x = 6,296,850,087.66/90,633.60
  6. Step 6: Final answer
    x = 69,475.89

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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.