Home / 78,738.36-108,592.08-66,533.55

Finding the Fourth Proportional to 78,738.36, 108,592.08 and 66,533.55

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Solution

The fourth proportional to 78,738.36, 108,592.08 and 66,533.55 is: 91,759.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,738.36 : 108,592.08 = 66,533.55 : x
  2. Step 2: Convert to fraction form
    78,738.36/108,592.08 = 66,533.55/x
  3. Step 3: Cross multiply
    78,738.36x = 108,592.08 × 66,533.55
  4. Step 4: Simplify right side
    78,738.36x = 7,225,016,584.28
  5. Step 5: Solve for x
    x = 7,225,016,584.28/78,738.36
  6. Step 6: Final answer
    x = 91,759.81

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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.