Home / 57,971.20-86,956.80-18,529.60

Finding the Fourth Proportional to 57,971.20, 86,956.80 and 18,529.60

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Solution

The fourth proportional to 57,971.20, 86,956.80 and 18,529.60 is: 27,794.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,971.20 : 86,956.80 = 18,529.60 : x
  2. Step 2: Convert to fraction form
    57,971.20/86,956.80 = 18,529.60/x
  3. Step 3: Cross multiply
    57,971.20x = 86,956.80 × 18,529.60
  4. Step 4: Simplify right side
    57,971.20x = 1,611,274,721.28
  5. Step 5: Solve for x
    x = 1,611,274,721.28/57,971.20
  6. Step 6: Final answer
    x = 27,794.40

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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.