Home / 93,078.21-128,451.15-50,638.26

Finding the Fourth Proportional to 93,078.21, 128,451.15 and 50,638.26

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Solution

The fourth proportional to 93,078.21, 128,451.15 and 50,638.26 is: 69,882.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,078.21 : 128,451.15 = 50,638.26 : x
  2. Step 2: Convert to fraction form
    93,078.21/128,451.15 = 50,638.26/x
  3. Step 3: Cross multiply
    93,078.21x = 128,451.15 × 50,638.26
  4. Step 4: Simplify right side
    93,078.21x = 6,504,542,731.00
  5. Step 5: Solve for x
    x = 6,504,542,731.00/93,078.21
  6. Step 6: Final answer
    x = 69,882.55

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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.