Home / 66,065.46-91,140.57-39,209.10

Finding the Fourth Proportional to 66,065.46, 91,140.57 and 39,209.10

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Solution

The fourth proportional to 66,065.46, 91,140.57 and 39,209.10 is: 54,090.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,065.46 : 91,140.57 = 39,209.10 : x
  2. Step 2: Convert to fraction form
    66,065.46/91,140.57 = 39,209.10/x
  3. Step 3: Cross multiply
    66,065.46x = 91,140.57 × 39,209.10
  4. Step 4: Simplify right side
    66,065.46x = 3,573,539,723.19
  5. Step 5: Solve for x
    x = 3,573,539,723.19/66,065.46
  6. Step 6: Final answer
    x = 54,090.89

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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.