Home / 78,496,384.44-117,735,303.78-20,993,112.30

Finding the Fourth Proportional to 78,496,384.44, 117,735,303.78 and 20,993,112.30

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Solution

The fourth proportional to 78,496,384.44, 117,735,303.78 and 20,993,112.30 is: 31,487,188.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,496,384.44 : 117,735,303.78 = 20,993,112.30 : x
  2. Step 2: Convert to fraction form
    78,496,384.44/117,735,303.78 = 20,993,112.30/x
  3. Step 3: Cross multiply
    78,496,384.44x = 117,735,303.78 × 20,993,112.30
  4. Step 4: Simplify right side
    78,496,384.44x = 2,471,630,453,928,154.50
  5. Step 5: Solve for x
    x = 2,471,630,453,928,154.50/78,496,384.44
  6. Step 6: Final answer
    x = 31,487,188.51

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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.