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Finding the Fourth Proportional to 66,777, 92,155.30 and 36,969

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Solution

The fourth proportional to 66,777, 92,155.30 and 36,969 is: 51,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,777 : 92,155.30 = 36,969 : x
  2. Step 2: Convert to fraction form
    66,777/92,155.30 = 36,969/x
  3. Step 3: Cross multiply
    66,777x = 92,155.30 × 36,969
  4. Step 4: Simplify right side
    66,777x = 3,406,889,285.70
  5. Step 5: Solve for x
    x = 3,406,889,285.70/66,777
  6. Step 6: Final answer
    x = 51,018.90

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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.