Home / 57,981.72-86,967.11-18,528.24

Finding the Fourth Proportional to 57,981.72, 86,967.11 and 18,528.24

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Solution

The fourth proportional to 57,981.72, 86,967.11 and 18,528.24 is: 27,790.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,981.72 : 86,967.11 = 18,528.24 : x
  2. Step 2: Convert to fraction form
    57,981.72/86,967.11 = 18,528.24/x
  3. Step 3: Cross multiply
    57,981.72x = 86,967.11 × 18,528.24
  4. Step 4: Simplify right side
    57,981.72x = 1,611,347,393.55
  5. Step 5: Solve for x
    x = 1,611,347,393.55/57,981.72
  6. Step 6: Final answer
    x = 27,790.61

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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.