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Finding the Fourth Proportional to 45,493.65, 68,289.01 and 40,261.95

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Solution

The fourth proportional to 45,493.65, 68,289.01 and 40,261.95 is: 60,435.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,493.65 : 68,289.01 = 40,261.95 : x
  2. Step 2: Convert to fraction form
    45,493.65/68,289.01 = 40,261.95/x
  3. Step 3: Cross multiply
    45,493.65x = 68,289.01 × 40,261.95
  4. Step 4: Simplify right side
    45,493.65x = 2,749,448,605.51
  5. Step 5: Solve for x
    x = 2,749,448,605.51/45,493.65
  6. Step 6: Final answer
    x = 60,435.88

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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.