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Finding the Fourth Proportional to 69,888,057.60, 104,832,086.40 and 45,701,587.20

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Solution

The fourth proportional to 69,888,057.60, 104,832,086.40 and 45,701,587.20 is: 68,552,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,888,057.60 : 104,832,086.40 = 45,701,587.20 : x
  2. Step 2: Convert to fraction form
    69,888,057.60/104,832,086.40 = 45,701,587.20/x
  3. Step 3: Cross multiply
    69,888,057.60x = 104,832,086.40 × 45,701,587.20
  4. Step 4: Simplify right side
    69,888,057.60x = 4,790,992,737,967,535
  5. Step 5: Solve for x
    x = 4,790,992,737,967,535/69,888,057.60
  6. Step 6: Final answer
    x = 68,552,380.80

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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.