Home / 39,905.36-55,074.12-23,138.96

Finding the Fourth Proportional to 39,905.36, 55,074.12 and 23,138.96

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Solution

The fourth proportional to 39,905.36, 55,074.12 and 23,138.96 is: 31,934.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,905.36 : 55,074.12 = 23,138.96 : x
  2. Step 2: Convert to fraction form
    39,905.36/55,074.12 = 23,138.96/x
  3. Step 3: Cross multiply
    39,905.36x = 55,074.12 × 23,138.96
  4. Step 4: Simplify right side
    39,905.36x = 1,274,357,859.72
  5. Step 5: Solve for x
    x = 1,274,357,859.72/39,905.36
  6. Step 6: Final answer
    x = 31,934.50

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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.