Home / 85,932.90-128,899.35-35,999.64

Finding the Fourth Proportional to 85,932.90, 128,899.35 and 35,999.64

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Solution

The fourth proportional to 85,932.90, 128,899.35 and 35,999.64 is: 53,999.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,932.90 : 128,899.35 = 35,999.64 : x
  2. Step 2: Convert to fraction form
    85,932.90/128,899.35 = 35,999.64/x
  3. Step 3: Cross multiply
    85,932.90x = 128,899.35 × 35,999.64
  4. Step 4: Simplify right side
    85,932.90x = 4,640,330,196.23
  5. Step 5: Solve for x
    x = 4,640,330,196.23/85,932.90
  6. Step 6: Final answer
    x = 53,999.46

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.