Home / 39,108.42-53,970.69-22,115.21

Finding the Fourth Proportional to 39,108.42, 53,970.69 and 22,115.21

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Solution

The fourth proportional to 39,108.42, 53,970.69 and 22,115.21 is: 30,519.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,108.42 : 53,970.69 = 22,115.21 : x
  2. Step 2: Convert to fraction form
    39,108.42/53,970.69 = 22,115.21/x
  3. Step 3: Cross multiply
    39,108.42x = 53,970.69 × 22,115.21
  4. Step 4: Simplify right side
    39,108.42x = 1,193,573,099.97
  5. Step 5: Solve for x
    x = 1,193,573,099.97/39,108.42
  6. Step 6: Final answer
    x = 30,519.59

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Double scale
Find fourth proportional to 39,109.42, 53,972.07 and 22,116.21
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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.