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Finding the Fourth Proportional to 68,323, 94,285.74 and 38,515

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Solution

The fourth proportional to 68,323, 94,285.74 and 38,515 is: 53,150.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,323 : 94,285.74 = 38,515 : x
  2. Step 2: Convert to fraction form
    68,323/94,285.74 = 38,515/x
  3. Step 3: Cross multiply
    68,323x = 94,285.74 × 38,515
  4. Step 4: Simplify right side
    68,323x = 3,631,415,276.10
  5. Step 5: Solve for x
    x = 3,631,415,276.10/68,323
  6. Step 6: Final answer
    x = 53,150.70

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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.