Home / 69,120,209.20-103,680,313.80-51,204,305.20

Finding the Fourth Proportional to 69,120,209.20, 103,680,313.80 and 51,204,305.20

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Solution

The fourth proportional to 69,120,209.20, 103,680,313.80 and 51,204,305.20 is: 76,806,457.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,120,209.20 : 103,680,313.80 = 51,204,305.20 : x
  2. Step 2: Convert to fraction form
    69,120,209.20/103,680,313.80 = 51,204,305.20/x
  3. Step 3: Cross multiply
    69,120,209.20x = 103,680,313.80 × 51,204,305.20
  4. Step 4: Simplify right side
    69,120,209.20x = 5,308,878,431,046,972
  5. Step 5: Solve for x
    x = 5,308,878,431,046,972/69,120,209.20
  6. Step 6: Final answer
    x = 76,806,457.80

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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.