Home / 66,140.27-91,274.30-38,922.37

Finding the Fourth Proportional to 66,140.27, 91,274.30 and 38,922.37

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Solution

The fourth proportional to 66,140.27, 91,274.30 and 38,922.37 is: 53,713.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,140.27 : 91,274.30 = 38,922.37 : x
  2. Step 2: Convert to fraction form
    66,140.27/91,274.30 = 38,922.37/x
  3. Step 3: Cross multiply
    66,140.27x = 91,274.30 × 38,922.37
  4. Step 4: Simplify right side
    66,140.27x = 3,552,611,619.72
  5. Step 5: Solve for x
    x = 3,552,611,619.72/66,140.27
  6. Step 6: Final answer
    x = 53,713.30

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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.