Home / 81,190.02-111,969.66-50,978.16

Finding the Fourth Proportional to 81,190.02, 111,969.66 and 50,978.16

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Solution

The fourth proportional to 81,190.02, 111,969.66 and 50,978.16 is: 70,304.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,190.02 : 111,969.66 = 50,978.16 : x
  2. Step 2: Convert to fraction form
    81,190.02/111,969.66 = 50,978.16/x
  3. Step 3: Cross multiply
    81,190.02x = 111,969.66 × 50,978.16
  4. Step 4: Simplify right side
    81,190.02x = 5,708,007,242.63
  5. Step 5: Solve for x
    x = 5,708,007,242.63/81,190.02
  6. Step 6: Final answer
    x = 70,304.30

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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.