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Finding the Third Proportional to 52,008 and 78,480

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Solution

The third proportional to 52,008 and 78,480 is: 118,426.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,008 : 78,480 = 78,480 : x
  2. Step 2: Convert to fraction form
    52,008/78,480 = 78,480/x
  3. Step 3: Cross multiply
    52,008x = 78,480 × 78,480
  4. Step 4: Simplify right side
    52,008x = 6,159,110,400
  5. Step 5: Solve for x
    x = 6,159,110,400/52,008
  6. Step 6: Final answer
    x = 118,426.21

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.