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Finding the Fourth Proportional to 66,771.34, 92,206.89 and 42,939.38

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Solution

The fourth proportional to 66,771.34, 92,206.89 and 42,939.38 is: 59,296.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,771.34 : 92,206.89 = 42,939.38 : x
  2. Step 2: Convert to fraction form
    66,771.34/92,206.89 = 42,939.38/x
  3. Step 3: Cross multiply
    66,771.34x = 92,206.89 × 42,939.38
  4. Step 4: Simplify right side
    66,771.34x = 3,959,306,918.85
  5. Step 5: Solve for x
    x = 3,959,306,918.85/66,771.34
  6. Step 6: Final answer
    x = 59,296.50

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1.5x scale

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.