Home / 66,745.88-92,142.63-38,446.10

Finding the Fourth Proportional to 66,745.88, 92,142.63 and 38,446.10

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Solution

The fourth proportional to 66,745.88, 92,142.63 and 38,446.10 is: 53,074.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,745.88 : 92,142.63 = 38,446.10 : x
  2. Step 2: Convert to fraction form
    66,745.88/92,142.63 = 38,446.10/x
  3. Step 3: Cross multiply
    66,745.88x = 92,142.63 × 38,446.10
  4. Step 4: Simplify right side
    66,745.88x = 3,542,524,767.24
  5. Step 5: Solve for x
    x = 3,542,524,767.24/66,745.88
  6. Step 6: Final answer
    x = 53,074.81

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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.