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Finding the Third Proportional to 60,487 and 90,791

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Solution

The third proportional to 60,487 and 90,791 is: 136,277.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,487 : 90,791 = 90,791 : x
  2. Step 2: Convert to fraction form
    60,487/90,791 = 90,791/x
  3. Step 3: Cross multiply
    60,487x = 90,791 × 90,791
  4. Step 4: Simplify right side
    60,487x = 8,243,005,681
  5. Step 5: Solve for x
    x = 8,243,005,681/60,487
  6. Step 6: Final answer
    x = 136,277.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.