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Finding the Fourth Proportional to 85,228.80, 127,843.20 and 29,830.40

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Solution

The fourth proportional to 85,228.80, 127,843.20 and 29,830.40 is: 44,745.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,228.80 : 127,843.20 = 29,830.40 : x
  2. Step 2: Convert to fraction form
    85,228.80/127,843.20 = 29,830.40/x
  3. Step 3: Cross multiply
    85,228.80x = 127,843.20 × 29,830.40
  4. Step 4: Simplify right side
    85,228.80x = 3,813,613,793.28
  5. Step 5: Solve for x
    x = 3,813,613,793.28/85,228.80
  6. Step 6: Final answer
    x = 44,745.60

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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.