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Finding the Fourth Proportional to 43,818.40, 65,630.40 and 36,042.40

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Solution

The fourth proportional to 43,818.40, 65,630.40 and 36,042.40 is: 53,983.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,818.40 : 65,630.40 = 36,042.40 : x
  2. Step 2: Convert to fraction form
    43,818.40/65,630.40 = 36,042.40/x
  3. Step 3: Cross multiply
    43,818.40x = 65,630.40 × 36,042.40
  4. Step 4: Simplify right side
    43,818.40x = 2,365,477,128.96
  5. Step 5: Solve for x
    x = 2,365,477,128.96/43,818.40
  6. Step 6: Final answer
    x = 53,983.65

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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.