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Finding the Fourth Proportional to 90,656.94, 125,100.78 and 50,369.96

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Solution

The fourth proportional to 90,656.94, 125,100.78 and 50,369.96 is: 69,507.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,656.94 : 125,100.78 = 50,369.96 : x
  2. Step 2: Convert to fraction form
    90,656.94/125,100.78 = 50,369.96/x
  3. Step 3: Cross multiply
    90,656.94x = 125,100.78 × 50,369.96
  4. Step 4: Simplify right side
    90,656.94x = 6,301,321,284.57
  5. Step 5: Solve for x
    x = 6,301,321,284.57/90,656.94
  6. Step 6: Final answer
    x = 69,507.32

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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.