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Finding the Fourth Proportional to 52,479.13, 78,719.04 and 19,185.49

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Solution

The fourth proportional to 52,479.13, 78,719.04 and 19,185.49 is: 28,778.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,479.13 : 78,719.04 = 19,185.49 : x
  2. Step 2: Convert to fraction form
    52,479.13/78,719.04 = 19,185.49/x
  3. Step 3: Cross multiply
    52,479.13x = 78,719.04 × 19,185.49
  4. Step 4: Simplify right side
    52,479.13x = 1,510,263,354.73
  5. Step 5: Solve for x
    x = 1,510,263,354.73/52,479.13
  6. Step 6: Final answer
    x = 28,778.36

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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.