Home / 81,152,661.66-111,925,372.77-71,342,129.58

Finding the Fourth Proportional to 81,152,661.66, 111,925,372.77 and 71,342,129.58

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Solution

The fourth proportional to 81,152,661.66, 111,925,372.77 and 71,342,129.58 is: 98,394,732.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,152,661.66 : 111,925,372.77 = 71,342,129.58 : x
  2. Step 2: Convert to fraction form
    81,152,661.66/111,925,372.77 = 71,342,129.58/x
  3. Step 3: Cross multiply
    81,152,661.66x = 111,925,372.77 × 71,342,129.58
  4. Step 4: Simplify right side
    81,152,661.66x = 7,984,994,447,447,143
  5. Step 5: Solve for x
    x = 7,984,994,447,447,143/81,152,661.66
  6. Step 6: Final answer
    x = 98,394,732.64

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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.