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Finding the Fourth Proportional to 40,480.98, 60,723.29 and 12,398.99

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Solution

The fourth proportional to 40,480.98, 60,723.29 and 12,398.99 is: 18,599.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,480.98 : 60,723.29 = 12,398.99 : x
  2. Step 2: Convert to fraction form
    40,480.98/60,723.29 = 12,398.99/x
  3. Step 3: Cross multiply
    40,480.98x = 60,723.29 × 12,398.99
  4. Step 4: Simplify right side
    40,480.98x = 752,907,465.48
  5. Step 5: Solve for x
    x = 752,907,465.48/40,480.98
  6. Step 6: Final answer
    x = 18,599.04

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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.