Home / 66,731.22-92,122.38-38,431.44

Finding the Fourth Proportional to 66,731.22, 92,122.38 and 38,431.44

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Solution

The fourth proportional to 66,731.22, 92,122.38 and 38,431.44 is: 53,054.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,731.22 : 92,122.38 = 38,431.44 : x
  2. Step 2: Convert to fraction form
    66,731.22/92,122.38 = 38,431.44/x
  3. Step 3: Cross multiply
    66,731.22x = 92,122.38 × 38,431.44
  4. Step 4: Simplify right side
    66,731.22x = 3,540,395,719.63
  5. Step 5: Solve for x
    x = 3,540,395,719.63/66,731.22
  6. Step 6: Final answer
    x = 53,054.56

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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.