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Finding the Fourth Proportional to 67,402.80, 101,104.20 and 43,783.20

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Solution

The fourth proportional to 67,402.80, 101,104.20 and 43,783.20 is: 65,674.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,402.80 : 101,104.20 = 43,783.20 : x
  2. Step 2: Convert to fraction form
    67,402.80/101,104.20 = 43,783.20/x
  3. Step 3: Cross multiply
    67,402.80x = 101,104.20 × 43,783.20
  4. Step 4: Simplify right side
    67,402.80x = 4,426,665,409.44
  5. Step 5: Solve for x
    x = 4,426,665,409.44/67,402.80
  6. Step 6: Final answer
    x = 65,674.80

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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.