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Finding the Third Proportional to 52,533 and 78,840

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Solution

The third proportional to 52,533 and 78,840 is: 118,320.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,533 : 78,840 = 78,840 : x
  2. Step 2: Convert to fraction form
    52,533/78,840 = 78,840/x
  3. Step 3: Cross multiply
    52,533x = 78,840 × 78,840
  4. Step 4: Simplify right side
    52,533x = 6,215,745,600
  5. Step 5: Solve for x
    x = 6,215,745,600/52,533
  6. Step 6: Final answer
    x = 118,320.78

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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.