Home / 40,129,989.41-55,379,668.81-21,795,274.91

Finding the Fourth Proportional to 40,129,989.41, 55,379,668.81 and 21,795,274.91

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Solution

The fourth proportional to 40,129,989.41, 55,379,668.81 and 21,795,274.91 is: 30,077,633.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,129,989.41 : 55,379,668.81 = 21,795,274.91 : x
  2. Step 2: Convert to fraction form
    40,129,989.41/55,379,668.81 = 21,795,274.91/x
  3. Step 3: Cross multiply
    40,129,989.41x = 55,379,668.81 × 21,795,274.91
  4. Step 4: Simplify right side
    40,129,989.41x = 1,207,015,106,138,702.50
  5. Step 5: Solve for x
    x = 1,207,015,106,138,702.50/40,129,989.41
  6. Step 6: Final answer
    x = 30,077,633.31

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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.