Home / 68,928,789.70-103,394,256.18-20,411,550.64

Finding the Fourth Proportional to 68,928,789.70, 103,394,256.18 and 20,411,550.64

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Solution

The fourth proportional to 68,928,789.70, 103,394,256.18 and 20,411,550.64 is: 30,617,643.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,928,789.70 : 103,394,256.18 = 20,411,550.64 : x
  2. Step 2: Convert to fraction form
    68,928,789.70/103,394,256.18 = 20,411,550.64/x
  3. Step 3: Cross multiply
    68,928,789.70x = 103,394,256.18 × 20,411,550.64
  4. Step 4: Simplify right side
    68,928,789.70x = 2,110,437,095,903,203.25
  5. Step 5: Solve for x
    x = 2,110,437,095,903,203.25/68,928,789.70
  6. Step 6: Final answer
    x = 30,617,643.30

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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.