Home / 66,383.34-91,567.15-39,505.78

Finding the Fourth Proportional to 66,383.34, 91,567.15 and 39,505.78

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Solution

The fourth proportional to 66,383.34, 91,567.15 and 39,505.78 is: 54,493.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,383.34 : 91,567.15 = 39,505.78 : x
  2. Step 2: Convert to fraction form
    66,383.34/91,567.15 = 39,505.78/x
  3. Step 3: Cross multiply
    66,383.34x = 91,567.15 × 39,505.78
  4. Step 4: Simplify right side
    66,383.34x = 3,617,431,683.13
  5. Step 5: Solve for x
    x = 3,617,431,683.13/66,383.34
  6. Step 6: Final answer
    x = 54,493.07

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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.