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Finding the Fourth Proportional to 85,039.52, 127,515.53 and 38,266.88

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Solution

The fourth proportional to 85,039.52, 127,515.53 and 38,266.88 is: 57,380.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,039.52 : 127,515.53 = 38,266.88 : x
  2. Step 2: Convert to fraction form
    85,039.52/127,515.53 = 38,266.88/x
  3. Step 3: Cross multiply
    85,039.52x = 127,515.53 × 38,266.88
  4. Step 4: Simplify right side
    85,039.52x = 4,879,620,942.74
  5. Step 5: Solve for x
    x = 4,879,620,942.74/85,039.52
  6. Step 6: Final answer
    x = 57,380.63

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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.