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Finding the Fourth Proportional to 40,393.80, 60,582.60 and 15,416.64

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Solution

The fourth proportional to 40,393.80, 60,582.60 and 15,416.64 is: 23,121.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,393.80 : 60,582.60 = 15,416.64 : x
  2. Step 2: Convert to fraction form
    40,393.80/60,582.60 = 15,416.64/x
  3. Step 3: Cross multiply
    40,393.80x = 60,582.60 × 15,416.64
  4. Step 4: Simplify right side
    40,393.80x = 933,980,134.46
  5. Step 5: Solve for x
    x = 933,980,134.46/40,393.80
  6. Step 6: Final answer
    x = 23,121.87

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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.