Home / 85,480.10-128,220.15-23,150.60

Finding the Fourth Proportional to 85,480.10, 128,220.15 and 23,150.60

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Solution

The fourth proportional to 85,480.10, 128,220.15 and 23,150.60 is: 34,725.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,480.10 : 128,220.15 = 23,150.60 : x
  2. Step 2: Convert to fraction form
    85,480.10/128,220.15 = 23,150.60/x
  3. Step 3: Cross multiply
    85,480.10x = 128,220.15 × 23,150.60
  4. Step 4: Simplify right side
    85,480.10x = 2,968,373,404.59
  5. Step 5: Solve for x
    x = 2,968,373,404.59/85,480.10
  6. Step 6: Final answer
    x = 34,725.90

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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.