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Finding the Fourth Proportional to 68,190, 102,000.15 and 47,925.36

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Solution

The fourth proportional to 68,190, 102,000.15 and 47,925.36 is: 71,687.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,190 : 102,000.15 = 47,925.36 : x
  2. Step 2: Convert to fraction form
    68,190/102,000.15 = 47,925.36/x
  3. Step 3: Cross multiply
    68,190x = 102,000.15 × 47,925.36
  4. Step 4: Simplify right side
    68,190x = 4,888,393,908.80
  5. Step 5: Solve for x
    x = 4,888,393,908.80/68,190
  6. Step 6: Final answer
    x = 71,687.84

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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.