Home / 81,163.36-111,969.80-47,614.24

Finding the Fourth Proportional to 81,163.36, 111,969.80 and 47,614.24

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Solution

The fourth proportional to 81,163.36, 111,969.80 and 47,614.24 is: 65,686.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,163.36 : 111,969.80 = 47,614.24 : x
  2. Step 2: Convert to fraction form
    81,163.36/111,969.80 = 47,614.24/x
  3. Step 3: Cross multiply
    81,163.36x = 111,969.80 × 47,614.24
  4. Step 4: Simplify right side
    81,163.36x = 5,331,356,929.95
  5. Step 5: Solve for x
    x = 5,331,356,929.95/81,163.36
  6. Step 6: Final answer
    x = 65,686.74

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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.