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Finding the Fourth Proportional to 77,496, 116,244 and 19,128

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Solution

The fourth proportional to 77,496, 116,244 and 19,128 is: 28,692

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,496 : 116,244 = 19,128 : x
  2. Step 2: Convert to fraction form
    77,496/116,244 = 19,128/x
  3. Step 3: Cross multiply
    77,496x = 116,244 × 19,128
  4. Step 4: Simplify right side
    77,496x = 2,223,515,232
  5. Step 5: Solve for x
    x = 2,223,515,232/77,496
  6. Step 6: Final answer
    x = 28,692

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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.