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Finding the Fourth Proportional to 51,984.72, 71,739 and 29,628.72

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Solution

The fourth proportional to 51,984.72, 71,739 and 29,628.72 is: 40,887.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,984.72 : 71,739 = 29,628.72 : x
  2. Step 2: Convert to fraction form
    51,984.72/71,739 = 29,628.72/x
  3. Step 3: Cross multiply
    51,984.72x = 71,739 × 29,628.72
  4. Step 4: Simplify right side
    51,984.72x = 2,125,534,744.08
  5. Step 5: Solve for x
    x = 2,125,534,744.08/51,984.72
  6. Step 6: Final answer
    x = 40,887.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.