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Finding the Fourth Proportional to 91,889.40, 126,797.94 and 51,607.62

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Solution

The fourth proportional to 91,889.40, 126,797.94 and 51,607.62 is: 71,213.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,889.40 : 126,797.94 = 51,607.62 : x
  2. Step 2: Convert to fraction form
    91,889.40/126,797.94 = 51,607.62/x
  3. Step 3: Cross multiply
    91,889.40x = 126,797.94 × 51,607.62
  4. Step 4: Simplify right side
    91,889.40x = 6,543,739,904.30
  5. Step 5: Solve for x
    x = 6,543,739,904.30/91,889.40
  6. Step 6: Final answer
    x = 71,213.22

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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.