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Finding the Fourth Proportional to 66,219.88, 91,322.89 and 49,266.58

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Solution

The fourth proportional to 66,219.88, 91,322.89 and 49,266.58 is: 67,942.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,219.88 : 91,322.89 = 49,266.58 : x
  2. Step 2: Convert to fraction form
    66,219.88/91,322.89 = 49,266.58/x
  3. Step 3: Cross multiply
    66,219.88x = 91,322.89 × 49,266.58
  4. Step 4: Simplify right side
    66,219.88x = 4,499,166,466.02
  5. Step 5: Solve for x
    x = 4,499,166,466.02/66,219.88
  6. Step 6: Final answer
    x = 67,942.84

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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.