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Finding the Fourth Proportional to 66,127, 91,256 and 36,319

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Solution

The fourth proportional to 66,127, 91,256 and 36,319 is: 50,120.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,127 : 91,256 = 36,319 : x
  2. Step 2: Convert to fraction form
    66,127/91,256 = 36,319/x
  3. Step 3: Cross multiply
    66,127x = 91,256 × 36,319
  4. Step 4: Simplify right side
    66,127x = 3,314,326,664
  5. Step 5: Solve for x
    x = 3,314,326,664/66,127
  6. Step 6: Final answer
    x = 50,120.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.