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Finding the Fourth Proportional to 66,856,834.40, 100,285,251.60 and 61,117,271.60

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Solution

The fourth proportional to 66,856,834.40, 100,285,251.60 and 61,117,271.60 is: 91,675,907.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,856,834.40 : 100,285,251.60 = 61,117,271.60 : x
  2. Step 2: Convert to fraction form
    66,856,834.40/100,285,251.60 = 61,117,271.60/x
  3. Step 3: Cross multiply
    66,856,834.40x = 100,285,251.60 × 61,117,271.60
  4. Step 4: Simplify right side
    66,856,834.40x = 6,129,160,959,511,534
  5. Step 5: Solve for x
    x = 6,129,160,959,511,534/66,856,834.40
  6. Step 6: Final answer
    x = 91,675,907.40

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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.