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Finding the Fourth Proportional to 66,704,702.40, 99,907,754.40 and 54,760,766.40

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Solution

The fourth proportional to 66,704,702.40, 99,907,754.40 and 54,760,766.40 is: 82,018,583.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,704,702.40 : 99,907,754.40 = 54,760,766.40 : x
  2. Step 2: Convert to fraction form
    66,704,702.40/99,907,754.40 = 54,760,766.40/x
  3. Step 3: Cross multiply
    66,704,702.40x = 99,907,754.40 × 54,760,766.40
  4. Step 4: Simplify right side
    66,704,702.40x = 5,471,025,200,246,972
  5. Step 5: Solve for x
    x = 5,471,025,200,246,972/66,704,702.40
  6. Step 6: Final answer
    x = 82,018,583.45

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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.