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Finding the Fourth Proportional to 85,041.52, 127,518.53 and 38,268.88

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Solution

The fourth proportional to 85,041.52, 127,518.53 and 38,268.88 is: 57,383.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,041.52 : 127,518.53 = 38,268.88 : x
  2. Step 2: Convert to fraction form
    85,041.52/127,518.53 = 38,268.88/x
  3. Step 3: Cross multiply
    85,041.52x = 127,518.53 × 38,268.88
  4. Step 4: Simplify right side
    85,041.52x = 4,879,991,322.35
  5. Step 5: Solve for x
    x = 4,879,991,322.35/85,041.52
  6. Step 6: Final answer
    x = 57,383.63

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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.