Home / 30,783,679.84-42,462,968.82-20,329,792.48

Finding the Fourth Proportional to 30,783,679.84, 42,462,968.82 and 20,329,792.48

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Solution

The fourth proportional to 30,783,679.84, 42,462,968.82 and 20,329,792.48 is: 28,042,889.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,783,679.84 : 42,462,968.82 = 20,329,792.48 : x
  2. Step 2: Convert to fraction form
    30,783,679.84/42,462,968.82 = 20,329,792.48/x
  3. Step 3: Cross multiply
    30,783,679.84x = 42,462,968.82 × 20,329,792.48
  4. Step 4: Simplify right side
    30,783,679.84x = 863,263,344,195,310.50
  5. Step 5: Solve for x
    x = 863,263,344,195,310.50/30,783,679.84
  6. Step 6: Final answer
    x = 28,042,889.89

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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.