Home / 81,152,669.68-111,925,383.80-71,342,137.60

Finding the Fourth Proportional to 81,152,669.68, 111,925,383.80 and 71,342,137.60

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Solution

The fourth proportional to 81,152,669.68, 111,925,383.80 and 71,342,137.60 is: 98,394,743.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,152,669.68 : 111,925,383.80 = 71,342,137.60 : x
  2. Step 2: Convert to fraction form
    81,152,669.68/111,925,383.80 = 71,342,137.60/x
  3. Step 3: Cross multiply
    81,152,669.68x = 111,925,383.80 × 71,342,137.60
  4. Step 4: Simplify right side
    81,152,669.68x = 7,984,996,131,992,410
  5. Step 5: Solve for x
    x = 7,984,996,131,992,410/81,152,669.68
  6. Step 6: Final answer
    x = 98,394,743.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.