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Finding the Third Proportional to 53,672.75 and 78,867.75

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Solution

The third proportional to 53,672.75 and 78,867.75 is: 115,889.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,672.75 : 78,867.75 = 78,867.75 : x
  2. Step 2: Convert to fraction form
    53,672.75/78,867.75 = 78,867.75/x
  3. Step 3: Cross multiply
    53,672.75x = 78,867.75 × 78,867.75
  4. Step 4: Simplify right side
    53,672.75x = 6,220,121,990.06
  5. Step 5: Solve for x
    x = 6,220,121,990.06/53,672.75
  6. Step 6: Final answer
    x = 115,889.76

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.