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Finding the Fourth Proportional to 69,851,894.40, 104,777,841.60 and 68,718,153.60

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Solution

The fourth proportional to 69,851,894.40, 104,777,841.60 and 68,718,153.60 is: 103,077,230.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,851,894.40 : 104,777,841.60 = 68,718,153.60 : x
  2. Step 2: Convert to fraction form
    69,851,894.40/104,777,841.60 = 68,718,153.60/x
  3. Step 3: Cross multiply
    69,851,894.40x = 104,777,841.60 × 68,718,153.60
  4. Step 4: Simplify right side
    69,851,894.40x = 7,200,139,812,945,269
  5. Step 5: Solve for x
    x = 7,200,139,812,945,269/69,851,894.40
  6. Step 6: Final answer
    x = 103,077,230.40

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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.