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Finding the Fourth Proportional to 89,150.40, 133,725.60 and 29,979.90

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Solution

The fourth proportional to 89,150.40, 133,725.60 and 29,979.90 is: 44,969.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,150.40 : 133,725.60 = 29,979.90 : x
  2. Step 2: Convert to fraction form
    89,150.40/133,725.60 = 29,979.90/x
  3. Step 3: Cross multiply
    89,150.40x = 133,725.60 × 29,979.90
  4. Step 4: Simplify right side
    89,150.40x = 4,009,080,115.44
  5. Step 5: Solve for x
    x = 4,009,080,115.44/89,150.40
  6. Step 6: Final answer
    x = 44,969.85

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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.