Home / 68,919,152.80-103,378,729.20-43,409,984.80

Finding the Fourth Proportional to 68,919,152.80, 103,378,729.20 and 43,409,984.80

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Solution

The fourth proportional to 68,919,152.80, 103,378,729.20 and 43,409,984.80 is: 65,114,977.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,919,152.80 : 103,378,729.20 = 43,409,984.80 : x
  2. Step 2: Convert to fraction form
    68,919,152.80/103,378,729.20 = 43,409,984.80/x
  3. Step 3: Cross multiply
    68,919,152.80x = 103,378,729.20 × 43,409,984.80
  4. Step 4: Simplify right side
    68,919,152.80x = 4,487,669,063,215,316
  5. Step 5: Solve for x
    x = 4,487,669,063,215,316/68,919,152.80
  6. Step 6: Final answer
    x = 65,114,977.20

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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.