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Finding the Third Proportional to 53,859 and 85,243.50

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Solution

The third proportional to 53,859 and 85,243.50 is: 134,916.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,859 : 85,243.50 = 85,243.50 : x
  2. Step 2: Convert to fraction form
    53,859/85,243.50 = 85,243.50/x
  3. Step 3: Cross multiply
    53,859x = 85,243.50 × 85,243.50
  4. Step 4: Simplify right side
    53,859x = 7,266,454,292.25
  5. Step 5: Solve for x
    x = 7,266,454,292.25/53,859
  6. Step 6: Final answer
    x = 134,916.25

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.