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Finding the Fourth Proportional to 68,290, 94,240.60 and 38,077.24

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Solution

The fourth proportional to 68,290, 94,240.60 and 38,077.24 is: 52,546.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,290 : 94,240.60 = 38,077.24 : x
  2. Step 2: Convert to fraction form
    68,290/94,240.60 = 38,077.24/x
  3. Step 3: Cross multiply
    68,290x = 94,240.60 × 38,077.24
  4. Step 4: Simplify right side
    68,290x = 3,588,421,943.94
  5. Step 5: Solve for x
    x = 3,588,421,943.94/68,290
  6. Step 6: Final answer
    x = 52,546.81

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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.