Home / 86,939.52-120,050.08-55,164.80

Finding the Fourth Proportional to 86,939.52, 120,050.08 and 55,164.80

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Solution

The fourth proportional to 86,939.52, 120,050.08 and 55,164.80 is: 76,174.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,939.52 : 120,050.08 = 55,164.80 : x
  2. Step 2: Convert to fraction form
    86,939.52/120,050.08 = 55,164.80/x
  3. Step 3: Cross multiply
    86,939.52x = 120,050.08 × 55,164.80
  4. Step 4: Simplify right side
    86,939.52x = 6,622,538,653.18
  5. Step 5: Solve for x
    x = 6,622,538,653.18/86,939.52
  6. Step 6: Final answer
    x = 76,174.09

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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.