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Finding the Fourth Proportional to 52,272, 78,408 and 15,336

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Solution

The fourth proportional to 52,272, 78,408 and 15,336 is: 23,004

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,272 : 78,408 = 15,336 : x
  2. Step 2: Convert to fraction form
    52,272/78,408 = 15,336/x
  3. Step 3: Cross multiply
    52,272x = 78,408 × 15,336
  4. Step 4: Simplify right side
    52,272x = 1,202,465,088
  5. Step 5: Solve for x
    x = 1,202,465,088/52,272
  6. Step 6: Final answer
    x = 23,004

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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.