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Finding the Third Proportional to 62,643.75 and 90,509.63

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Solution

The third proportional to 62,643.75 and 90,509.63 is: 130,771.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,643.75 : 90,509.63 = 90,509.63 : x
  2. Step 2: Convert to fraction form
    62,643.75/90,509.63 = 90,509.63/x
  3. Step 3: Cross multiply
    62,643.75x = 90,509.63 × 90,509.63
  4. Step 4: Simplify right side
    62,643.75x = 8,191,992,217.64
  5. Step 5: Solve for x
    x = 8,191,992,217.64/62,643.75
  6. Step 6: Final answer
    x = 130,771.10

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.