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Finding the Third Proportional to 31,605.19 and 69,573.94

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Solution

The third proportional to 31,605.19 and 69,573.94 is: 153,156.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,605.19 : 69,573.94 = 69,573.94 : x
  2. Step 2: Convert to fraction form
    31,605.19/69,573.94 = 69,573.94/x
  3. Step 3: Cross multiply
    31,605.19x = 69,573.94 × 69,573.94
  4. Step 4: Simplify right side
    31,605.19x = 4,840,532,779.25
  5. Step 5: Solve for x
    x = 4,840,532,779.25/31,605.19
  6. Step 6: Final answer
    x = 153,156.27

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.