Home / 90,768.55-125,251.01-50,475.81

Finding the Fourth Proportional to 90,768.55, 125,251.01 and 50,475.81

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Solution

The fourth proportional to 90,768.55, 125,251.01 and 50,475.81 is: 69,651.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,768.55 : 125,251.01 = 50,475.81 : x
  2. Step 2: Convert to fraction form
    90,768.55/125,251.01 = 50,475.81/x
  3. Step 3: Cross multiply
    90,768.55x = 125,251.01 × 50,475.81
  4. Step 4: Simplify right side
    90,768.55x = 6,322,145,885.13
  5. Step 5: Solve for x
    x = 6,322,145,885.13/90,768.55
  6. Step 6: Final answer
    x = 69,651.28

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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.