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Finding the Fourth Proportional to 40,274.40, 60,418.80 and 16,903.20

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Solution

The fourth proportional to 40,274.40, 60,418.80 and 16,903.20 is: 25,357.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,274.40 : 60,418.80 = 16,903.20 : x
  2. Step 2: Convert to fraction form
    40,274.40/60,418.80 = 16,903.20/x
  3. Step 3: Cross multiply
    40,274.40x = 60,418.80 × 16,903.20
  4. Step 4: Simplify right side
    40,274.40x = 1,021,271,060.16
  5. Step 5: Solve for x
    x = 1,021,271,060.16/40,274.40
  6. Step 6: Final answer
    x = 25,357.82

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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.