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Finding the Fourth Proportional to 66,008,890.88, 99,033,607.92 and 31,509,315.84

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Solution

The fourth proportional to 66,008,890.88, 99,033,607.92 and 31,509,315.84 is: 47,273,650.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,008,890.88 : 99,033,607.92 = 31,509,315.84 : x
  2. Step 2: Convert to fraction form
    66,008,890.88/99,033,607.92 = 31,509,315.84/x
  3. Step 3: Cross multiply
    66,008,890.88x = 99,033,607.92 × 31,509,315.84
  4. Step 4: Simplify right side
    66,008,890.88x = 3,120,481,230,726,005.50
  5. Step 5: Solve for x
    x = 3,120,481,230,726,005.50/66,008,890.88
  6. Step 6: Final answer
    x = 47,273,650.40

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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.