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Finding the Fourth Proportional to 85,150.14, 127,662.80 and 28,975.16

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Solution

The fourth proportional to 85,150.14, 127,662.80 and 28,975.16 is: 43,441.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,150.14 : 127,662.80 = 28,975.16 : x
  2. Step 2: Convert to fraction form
    85,150.14/127,662.80 = 28,975.16/x
  3. Step 3: Cross multiply
    85,150.14x = 127,662.80 × 28,975.16
  4. Step 4: Simplify right side
    85,150.14x = 3,699,049,272.86
  5. Step 5: Solve for x
    x = 3,699,049,272.86/85,150.14
  6. Step 6: Final answer
    x = 43,441.49

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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.