Home / 38,778.40-58,090.80-23,149.60

Finding the Fourth Proportional to 38,778.40, 58,090.80 and 23,149.60

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Solution

The fourth proportional to 38,778.40, 58,090.80 and 23,149.60 is: 34,678.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,778.40 : 58,090.80 = 23,149.60 : x
  2. Step 2: Convert to fraction form
    38,778.40/58,090.80 = 23,149.60/x
  3. Step 3: Cross multiply
    38,778.40x = 58,090.80 × 23,149.60
  4. Step 4: Simplify right side
    38,778.40x = 1,344,778,783.68
  5. Step 5: Solve for x
    x = 1,344,778,783.68/38,778.40
  6. Step 6: Final answer
    x = 34,678.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.