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Finding the Fourth Proportional to 68,608,999.40, 102,913,499.10 and 36,758,503.40

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Solution

The fourth proportional to 68,608,999.40, 102,913,499.10 and 36,758,503.40 is: 55,137,755.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,608,999.40 : 102,913,499.10 = 36,758,503.40 : x
  2. Step 2: Convert to fraction form
    68,608,999.40/102,913,499.10 = 36,758,503.40/x
  3. Step 3: Cross multiply
    68,608,999.40x = 102,913,499.10 × 36,758,503.40
  4. Step 4: Simplify right side
    68,608,999.40x = 3,782,946,206,573,246.50
  5. Step 5: Solve for x
    x = 3,782,946,206,573,246.50/68,608,999.40
  6. Step 6: Final answer
    x = 55,137,755.10

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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.