Home / 57,440.10-86,160.57-20,000.11

Finding the Fourth Proportional to 57,440.10, 86,160.57 and 20,000.11

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Solution

The fourth proportional to 57,440.10, 86,160.57 and 20,000.11 is: 30,000.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,440.10 : 86,160.57 = 20,000.11 : x
  2. Step 2: Convert to fraction form
    57,440.10/86,160.57 = 20,000.11/x
  3. Step 3: Cross multiply
    57,440.10x = 86,160.57 × 20,000.11
  4. Step 4: Simplify right side
    57,440.10x = 1,723,220,877.66
  5. Step 5: Solve for x
    x = 1,723,220,877.66/57,440.10
  6. Step 6: Final answer
    x = 30,000.31

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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.