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Finding the Fourth Proportional to 85,505.94, 128,226.06 and 35,609.58

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Solution

The fourth proportional to 85,505.94, 128,226.06 and 35,609.58 is: 53,400.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,505.94 : 128,226.06 = 35,609.58 : x
  2. Step 2: Convert to fraction form
    85,505.94/128,226.06 = 35,609.58/x
  3. Step 3: Cross multiply
    85,505.94x = 128,226.06 × 35,609.58
  4. Step 4: Simplify right side
    85,505.94x = 4,566,076,141.65
  5. Step 5: Solve for x
    x = 4,566,076,141.65/85,505.94
  6. Step 6: Final answer
    x = 53,400.69

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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.