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Finding the Fourth Proportional to 45,367.16, 67,879.62 and 40,762.98

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Solution

The fourth proportional to 45,367.16, 67,879.62 and 40,762.98 is: 60,990.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,367.16 : 67,879.62 = 40,762.98 : x
  2. Step 2: Convert to fraction form
    45,367.16/67,879.62 = 40,762.98/x
  3. Step 3: Cross multiply
    45,367.16x = 67,879.62 × 40,762.98
  4. Step 4: Simplify right side
    45,367.16x = 2,766,975,592.47
  5. Step 5: Solve for x
    x = 2,766,975,592.47/45,367.16
  6. Step 6: Final answer
    x = 60,990.72

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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.