Home / 81,114.83-111,937.82-47,143.20

Finding the Fourth Proportional to 81,114.83, 111,937.82 and 47,143.20

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Solution

The fourth proportional to 81,114.83, 111,937.82 and 47,143.20 is: 65,057.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,114.83 : 111,937.82 = 47,143.20 : x
  2. Step 2: Convert to fraction form
    81,114.83/111,937.82 = 47,143.20/x
  3. Step 3: Cross multiply
    81,114.83x = 111,937.82 × 47,143.20
  4. Step 4: Simplify right side
    81,114.83x = 5,277,107,219.87
  5. Step 5: Solve for x
    x = 5,277,107,219.87/81,114.83
  6. Step 6: Final answer
    x = 65,057.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.