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Finding the Fourth Proportional to 85,429.87, 128,096.80 and 35,476.36

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Solution

The fourth proportional to 85,429.87, 128,096.80 and 35,476.36 is: 53,194.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,429.87 : 128,096.80 = 35,476.36 : x
  2. Step 2: Convert to fraction form
    85,429.87/128,096.80 = 35,476.36/x
  3. Step 3: Cross multiply
    85,429.87x = 128,096.80 × 35,476.36
  4. Step 4: Simplify right side
    85,429.87x = 4,544,408,191.65
  5. Step 5: Solve for x
    x = 4,544,408,191.65/85,429.87
  6. Step 6: Final answer
    x = 53,194.61

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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.