Home / 66,078.46-91,146.80-39,201.94

Finding the Fourth Proportional to 66,078.46, 91,146.80 and 39,201.94

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Solution

The fourth proportional to 66,078.46, 91,146.80 and 39,201.94 is: 54,074.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,078.46 : 91,146.80 = 39,201.94 : x
  2. Step 2: Convert to fraction form
    66,078.46/91,146.80 = 39,201.94/x
  3. Step 3: Cross multiply
    66,078.46x = 91,146.80 × 39,201.94
  4. Step 4: Simplify right side
    66,078.46x = 3,573,130,960.92
  5. Step 5: Solve for x
    x = 3,573,130,960.92/66,078.46
  6. Step 6: Final answer
    x = 54,074.07

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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.