Home / 53,905.40-80,858.10-30,188.60

Finding the Fourth Proportional to 53,905.40, 80,858.10 and 30,188.60

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Solution

The fourth proportional to 53,905.40, 80,858.10 and 30,188.60 is: 45,282.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,905.40 : 80,858.10 = 30,188.60 : x
  2. Step 2: Convert to fraction form
    53,905.40/80,858.10 = 30,188.60/x
  3. Step 3: Cross multiply
    53,905.40x = 80,858.10 × 30,188.60
  4. Step 4: Simplify right side
    53,905.40x = 2,440,992,837.66
  5. Step 5: Solve for x
    x = 2,440,992,837.66/53,905.40
  6. Step 6: Final answer
    x = 45,282.90

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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.