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Finding the Fourth Proportional to 77,064, 115,596 and 18,696

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Solution

The fourth proportional to 77,064, 115,596 and 18,696 is: 28,044

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,064 : 115,596 = 18,696 : x
  2. Step 2: Convert to fraction form
    77,064/115,596 = 18,696/x
  3. Step 3: Cross multiply
    77,064x = 115,596 × 18,696
  4. Step 4: Simplify right side
    77,064x = 2,161,182,816
  5. Step 5: Solve for x
    x = 2,161,182,816/77,064
  6. Step 6: Final answer
    x = 28,044

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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.