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Finding the Fourth Proportional to 91,069, 125,675.22 and 51,325

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Solution

The fourth proportional to 91,069, 125,675.22 and 51,325 is: 70,828.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,069 : 125,675.22 = 51,325 : x
  2. Step 2: Convert to fraction form
    91,069/125,675.22 = 51,325/x
  3. Step 3: Cross multiply
    91,069x = 125,675.22 × 51,325
  4. Step 4: Simplify right side
    91,069x = 6,450,280,666.50
  5. Step 5: Solve for x
    x = 6,450,280,666.50/91,069
  6. Step 6: Final answer
    x = 70,828.50

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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.