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Finding the Fourth Proportional to 43,332.85, 64,986.35 and 18,372.49

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Solution

The fourth proportional to 43,332.85, 64,986.35 and 18,372.49 is: 27,553.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,332.85 : 64,986.35 = 18,372.49 : x
  2. Step 2: Convert to fraction form
    43,332.85/64,986.35 = 18,372.49/x
  3. Step 3: Cross multiply
    43,332.85x = 64,986.35 × 18,372.49
  4. Step 4: Simplify right side
    43,332.85x = 1,193,961,065.51
  5. Step 5: Solve for x
    x = 1,193,961,065.51/43,332.85
  6. Step 6: Final answer
    x = 27,553.25

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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.