Home / 39,911.09-55,077.52-22,005.78

Finding the Fourth Proportional to 39,911.09, 55,077.52 and 22,005.78

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Solution

The fourth proportional to 39,911.09, 55,077.52 and 22,005.78 is: 30,368.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,911.09 : 55,077.52 = 22,005.78 : x
  2. Step 2: Convert to fraction form
    39,911.09/55,077.52 = 22,005.78/x
  3. Step 3: Cross multiply
    39,911.09x = 55,077.52 × 22,005.78
  4. Step 4: Simplify right side
    39,911.09x = 1,212,023,512.68
  5. Step 5: Solve for x
    x = 1,212,023,512.68/39,911.09
  6. Step 6: Final answer
    x = 30,368.09

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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.