Home / 66,646.22-91,912.20-55,297.74

Finding the Fourth Proportional to 66,646.22, 91,912.20 and 55,297.74

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Solution

The fourth proportional to 66,646.22, 91,912.20 and 55,297.74 is: 76,261.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,646.22 : 91,912.20 = 55,297.74 : x
  2. Step 2: Convert to fraction form
    66,646.22/91,912.20 = 55,297.74/x
  3. Step 3: Cross multiply
    66,646.22x = 91,912.20 × 55,297.74
  4. Step 4: Simplify right side
    66,646.22x = 5,082,536,938.43
  5. Step 5: Solve for x
    x = 5,082,536,938.43/66,646.22
  6. Step 6: Final answer
    x = 76,261.45

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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.