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Finding the Fourth Proportional to 66,977,625.60, 100,466,438.40 and 66,081,830.40

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Solution

The fourth proportional to 66,977,625.60, 100,466,438.40 and 66,081,830.40 is: 99,122,745.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,977,625.60 : 100,466,438.40 = 66,081,830.40 : x
  2. Step 2: Convert to fraction form
    66,977,625.60/100,466,438.40 = 66,081,830.40/x
  3. Step 3: Cross multiply
    66,977,625.60x = 100,466,438.40 × 66,081,830.40
  4. Step 4: Simplify right side
    66,977,625.60x = 6,639,006,143,240,848
  5. Step 5: Solve for x
    x = 6,639,006,143,240,848/66,977,625.60
  6. Step 6: Final answer
    x = 99,122,745.60

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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.