Home / 55,012,137.90-82,520,947.85-20,936,124.78

Finding the Fourth Proportional to 55,012,137.90, 82,520,947.85 and 20,936,124.78

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Solution

The fourth proportional to 55,012,137.90, 82,520,947.85 and 20,936,124.78 is: 31,405,230.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,012,137.90 : 82,520,947.85 = 20,936,124.78 : x
  2. Step 2: Convert to fraction form
    55,012,137.90/82,520,947.85 = 20,936,124.78/x
  3. Step 3: Cross multiply
    55,012,137.90x = 82,520,947.85 × 20,936,124.78
  4. Step 4: Simplify right side
    55,012,137.90x = 1,727,668,861,046,792.25
  5. Step 5: Solve for x
    x = 1,727,668,861,046,792.25/55,012,137.90
  6. Step 6: Final answer
    x = 31,405,230.32

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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.