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Finding the Fourth Proportional to 86,803.95, 119,788.88 and 49,078.35

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Solution

The fourth proportional to 86,803.95, 119,788.88 and 49,078.35 is: 67,727.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,803.95 : 119,788.88 = 49,078.35 : x
  2. Step 2: Convert to fraction form
    86,803.95/119,788.88 = 49,078.35/x
  3. Step 3: Cross multiply
    86,803.95x = 119,788.88 × 49,078.35
  4. Step 4: Simplify right side
    86,803.95x = 5,879,040,333.36
  5. Step 5: Solve for x
    x = 5,879,040,333.36/86,803.95
  6. Step 6: Final answer
    x = 67,727.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.