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Finding the Fourth Proportional to 45,798,881.60, 68,729,815.20 and 18,872,537.60

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Solution

The fourth proportional to 45,798,881.60, 68,729,815.20 and 18,872,537.60 is: 28,321,783.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,798,881.60 : 68,729,815.20 = 18,872,537.60 : x
  2. Step 2: Convert to fraction form
    45,798,881.60/68,729,815.20 = 18,872,537.60/x
  3. Step 3: Cross multiply
    45,798,881.60x = 68,729,815.20 × 18,872,537.60
  4. Step 4: Simplify right side
    45,798,881.60x = 1,297,106,021,603,051.75
  5. Step 5: Solve for x
    x = 1,297,106,021,603,051.75/45,798,881.60
  6. Step 6: Final answer
    x = 28,321,783.77

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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.