Home / 81,107.29-111,920.35-47,114.84

Finding the Fourth Proportional to 81,107.29, 111,920.35 and 47,114.84

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Solution

The fourth proportional to 81,107.29, 111,920.35 and 47,114.84 is: 65,014.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,107.29 : 111,920.35 = 47,114.84 : x
  2. Step 2: Convert to fraction form
    81,107.29/111,920.35 = 47,114.84/x
  3. Step 3: Cross multiply
    81,107.29x = 111,920.35 × 47,114.84
  4. Step 4: Simplify right side
    81,107.29x = 5,273,109,382.99
  5. Step 5: Solve for x
    x = 5,273,109,382.99/81,107.29
  6. Step 6: Final answer
    x = 65,014.00

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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.