Home / 83,659.06-115,406.74-53,412.60

Finding the Fourth Proportional to 83,659.06, 115,406.74 and 53,412.60

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Solution

The fourth proportional to 83,659.06, 115,406.74 and 53,412.60 is: 73,682.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,659.06 : 115,406.74 = 53,412.60 : x
  2. Step 2: Convert to fraction form
    83,659.06/115,406.74 = 53,412.60/x
  3. Step 3: Cross multiply
    83,659.06x = 115,406.74 × 53,412.60
  4. Step 4: Simplify right side
    83,659.06x = 6,164,174,540.47
  5. Step 5: Solve for x
    x = 6,164,174,540.47/83,659.06
  6. Step 6: Final answer
    x = 73,682.09

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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.