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Finding the Fourth Proportional to 43,323.42, 64,971.90 and 18,363

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Solution

The fourth proportional to 43,323.42, 64,971.90 and 18,363 is: 27,538.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,323.42 : 64,971.90 = 18,363 : x
  2. Step 2: Convert to fraction form
    43,323.42/64,971.90 = 18,363/x
  3. Step 3: Cross multiply
    43,323.42x = 64,971.90 × 18,363
  4. Step 4: Simplify right side
    43,323.42x = 1,193,078,999.70
  5. Step 5: Solve for x
    x = 1,193,078,999.70/43,323.42
  6. Step 6: Final answer
    x = 27,538.89

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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.