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Finding the Fourth Proportional to 43,903.80, 65,661.30 and 36,905.40

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Solution

The fourth proportional to 43,903.80, 65,661.30 and 36,905.40 is: 55,194.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,903.80 : 65,661.30 = 36,905.40 : x
  2. Step 2: Convert to fraction form
    43,903.80/65,661.30 = 36,905.40/x
  3. Step 3: Cross multiply
    43,903.80x = 65,661.30 × 36,905.40
  4. Step 4: Simplify right side
    43,903.80x = 2,423,256,541.02
  5. Step 5: Solve for x
    x = 2,423,256,541.02/43,903.80
  6. Step 6: Final answer
    x = 55,194.69

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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.