Home / 66,790.80-92,174.76-38,499.12

Finding the Fourth Proportional to 66,790.80, 92,174.76 and 38,499.12

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Solution

The fourth proportional to 66,790.80, 92,174.76 and 38,499.12 is: 53,130.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,790.80 : 92,174.76 = 38,499.12 : x
  2. Step 2: Convert to fraction form
    66,790.80/92,174.76 = 38,499.12/x
  3. Step 3: Cross multiply
    66,790.80x = 92,174.76 × 38,499.12
  4. Step 4: Simplify right side
    66,790.80x = 3,548,647,146.21
  5. Step 5: Solve for x
    x = 3,548,647,146.21/66,790.80
  6. Step 6: Final answer
    x = 53,130.78

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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.