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Finding the Fourth Proportional to 66,644.94, 91,961.11 and 42,803.91

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Solution

The fourth proportional to 66,644.94, 91,961.11 and 42,803.91 is: 59,063.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,644.94 : 91,961.11 = 42,803.91 : x
  2. Step 2: Convert to fraction form
    66,644.94/91,961.11 = 42,803.91/x
  3. Step 3: Cross multiply
    66,644.94x = 91,961.11 × 42,803.91
  4. Step 4: Simplify right side
    66,644.94x = 3,936,295,075.94
  5. Step 5: Solve for x
    x = 3,936,295,075.94/66,644.94
  6. Step 6: Final answer
    x = 59,063.67

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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.