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Finding the Fourth Proportional to 52,435.74, 78,654.98 and 12,992.28

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Solution

The fourth proportional to 52,435.74, 78,654.98 and 12,992.28 is: 19,488.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,435.74 : 78,654.98 = 12,992.28 : x
  2. Step 2: Convert to fraction form
    52,435.74/78,654.98 = 12,992.28/x
  3. Step 3: Cross multiply
    52,435.74x = 78,654.98 × 12,992.28
  4. Step 4: Simplify right side
    52,435.74x = 1,021,907,458.59
  5. Step 5: Solve for x
    x = 1,021,907,458.59/52,435.74
  6. Step 6: Final answer
    x = 19,488.76

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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.