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Finding the Fourth Proportional to 68,624,010.40, 102,973,340.40 and 28,238,576.80

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Solution

The fourth proportional to 68,624,010.40, 102,973,340.40 and 28,238,576.80 is: 42,373,224.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,624,010.40 : 102,973,340.40 = 28,238,576.80 : x
  2. Step 2: Convert to fraction form
    68,624,010.40/102,973,340.40 = 28,238,576.80/x
  3. Step 3: Cross multiply
    68,624,010.40x = 102,973,340.40 × 28,238,576.80
  4. Step 4: Simplify right side
    68,624,010.40x = 2,907,820,581,237,943
  5. Step 5: Solve for x
    x = 2,907,820,581,237,943/68,624,010.40
  6. Step 6: Final answer
    x = 42,373,224.24

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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.