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Finding the Fourth Proportional to 91,136.64, 125,769.84 and 50,305.32

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Solution

The fourth proportional to 91,136.64, 125,769.84 and 50,305.32 is: 69,422.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,136.64 : 125,769.84 = 50,305.32 : x
  2. Step 2: Convert to fraction form
    91,136.64/125,769.84 = 50,305.32/x
  3. Step 3: Cross multiply
    91,136.64x = 125,769.84 × 50,305.32
  4. Step 4: Simplify right side
    91,136.64x = 6,326,892,047.55
  5. Step 5: Solve for x
    x = 6,326,892,047.55/91,136.64
  6. Step 6: Final answer
    x = 69,422.05

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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.