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Finding the Fourth Proportional to 91,081, 125,692.74 and 51,337

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Solution

The fourth proportional to 91,081, 125,692.74 and 51,337 is: 70,845.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,081 : 125,692.74 = 51,337 : x
  2. Step 2: Convert to fraction form
    91,081/125,692.74 = 51,337/x
  3. Step 3: Cross multiply
    91,081x = 125,692.74 × 51,337
  4. Step 4: Simplify right side
    91,081x = 6,452,688,193.38
  5. Step 5: Solve for x
    x = 6,452,688,193.38/91,081
  6. Step 6: Final answer
    x = 70,845.60

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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.