Home / 57,188.64-78,878.16-39,286.56

Finding the Fourth Proportional to 57,188.64, 78,878.16 and 39,286.56

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Solution

The fourth proportional to 57,188.64, 78,878.16 and 39,286.56 is: 54,186.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,188.64 : 78,878.16 = 39,286.56 : x
  2. Step 2: Convert to fraction form
    57,188.64/78,878.16 = 39,286.56/x
  3. Step 3: Cross multiply
    57,188.64x = 78,878.16 × 39,286.56
  4. Step 4: Simplify right side
    57,188.64x = 3,098,851,565.53
  5. Step 5: Solve for x
    x = 3,098,851,565.53/57,188.64
  6. Step 6: Final answer
    x = 54,186.49

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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.