Home / 57,305.36-79,118.28-39,394.64

Finding the Fourth Proportional to 57,305.36, 79,118.28 and 39,394.64

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Solution

The fourth proportional to 57,305.36, 79,118.28 and 39,394.64 is: 54,389.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,305.36 : 79,118.28 = 39,394.64 : x
  2. Step 2: Convert to fraction form
    57,305.36/79,118.28 = 39,394.64/x
  3. Step 3: Cross multiply
    57,305.36x = 79,118.28 × 39,394.64
  4. Step 4: Simplify right side
    57,305.36x = 3,116,836,158.02
  5. Step 5: Solve for x
    x = 3,116,836,158.02/57,305.36
  6. Step 6: Final answer
    x = 54,389.96

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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.