Home / 81,022,991.46-121,539,894.78-28,494,358.92

Finding the Fourth Proportional to 81,022,991.46, 121,539,894.78 and 28,494,358.92

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Solution

The fourth proportional to 81,022,991.46, 121,539,894.78 and 28,494,358.92 is: 42,743,440.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,022,991.46 : 121,539,894.78 = 28,494,358.92 : x
  2. Step 2: Convert to fraction form
    81,022,991.46/121,539,894.78 = 28,494,358.92/x
  3. Step 3: Cross multiply
    81,022,991.46x = 121,539,894.78 × 28,494,358.92
  4. Step 4: Simplify right side
    81,022,991.46x = 3,463,201,384,960,354.50
  5. Step 5: Solve for x
    x = 3,463,201,384,960,354.50/81,022,991.46
  6. Step 6: Final answer
    x = 42,743,440.13

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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.