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Finding the Fourth Proportional to 43,595.20, 65,392.80 and 20,208.88

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Solution

The fourth proportional to 43,595.20, 65,392.80 and 20,208.88 is: 30,313.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,595.20 : 65,392.80 = 20,208.88 : x
  2. Step 2: Convert to fraction form
    43,595.20/65,392.80 = 20,208.88/x
  3. Step 3: Cross multiply
    43,595.20x = 65,392.80 × 20,208.88
  4. Step 4: Simplify right side
    43,595.20x = 1,321,515,248.06
  5. Step 5: Solve for x
    x = 1,321,515,248.06/43,595.20
  6. Step 6: Final answer
    x = 30,313.32

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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.