Home / 57,089.08-85,612.32-19,638.56

Finding the Fourth Proportional to 57,089.08, 85,612.32 and 19,638.56

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Solution

The fourth proportional to 57,089.08, 85,612.32 and 19,638.56 is: 29,450.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,089.08 : 85,612.32 = 19,638.56 : x
  2. Step 2: Convert to fraction form
    57,089.08/85,612.32 = 19,638.56/x
  3. Step 3: Cross multiply
    57,089.08x = 85,612.32 × 19,638.56
  4. Step 4: Simplify right side
    57,089.08x = 1,681,302,683.06
  5. Step 5: Solve for x
    x = 1,681,302,683.06/57,089.08
  6. Step 6: Final answer
    x = 29,450.51

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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.