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Finding the Fourth Proportional to 51,980.89, 71,725.67 and 29,318.89

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Solution

The fourth proportional to 51,980.89, 71,725.67 and 29,318.89 is: 40,455.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,980.89 : 71,725.67 = 29,318.89 : x
  2. Step 2: Convert to fraction form
    51,980.89/71,725.67 = 29,318.89/x
  3. Step 3: Cross multiply
    51,980.89x = 71,725.67 × 29,318.89
  4. Step 4: Simplify right side
    51,980.89x = 2,102,916,703.00
  5. Step 5: Solve for x
    x = 2,102,916,703.00/51,980.89
  6. Step 6: Final answer
    x = 40,455.58

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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.