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Finding the Fourth Proportional to 73,156, 100,955.28 and 39,622

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Solution

The fourth proportional to 73,156, 100,955.28 and 39,622 is: 54,678.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,156 : 100,955.28 = 39,622 : x
  2. Step 2: Convert to fraction form
    73,156/100,955.28 = 39,622/x
  3. Step 3: Cross multiply
    73,156x = 100,955.28 × 39,622
  4. Step 4: Simplify right side
    73,156x = 4,000,050,104.16
  5. Step 5: Solve for x
    x = 4,000,050,104.16/73,156
  6. Step 6: Final answer
    x = 54,678.36

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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.