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Finding the Fourth Proportional to 66,063.46, 91,191.22 and 39,205.98

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Solution

The fourth proportional to 66,063.46, 91,191.22 and 39,205.98 is: 54,118.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,063.46 : 91,191.22 = 39,205.98 : x
  2. Step 2: Convert to fraction form
    66,063.46/91,191.22 = 39,205.98/x
  3. Step 3: Cross multiply
    66,063.46x = 91,191.22 × 39,205.98
  4. Step 4: Simplify right side
    66,063.46x = 3,575,241,147.50
  5. Step 5: Solve for x
    x = 3,575,241,147.50/66,063.46
  6. Step 6: Final answer
    x = 54,118.28

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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.