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Finding the Fourth Proportional to 68,468.40, 102,702.60 and 58,100.40

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Solution

The fourth proportional to 68,468.40, 102,702.60 and 58,100.40 is: 87,150.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,468.40 : 102,702.60 = 58,100.40 : x
  2. Step 2: Convert to fraction form
    68,468.40/102,702.60 = 58,100.40/x
  3. Step 3: Cross multiply
    68,468.40x = 102,702.60 × 58,100.40
  4. Step 4: Simplify right side
    68,468.40x = 5,967,062,141.04
  5. Step 5: Solve for x
    x = 5,967,062,141.04/68,468.40
  6. Step 6: Final answer
    x = 87,150.60

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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.