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Finding the Fourth Proportional to 68,782.81, 94,879.96 and 43,248.72

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Solution

The fourth proportional to 68,782.81, 94,879.96 and 43,248.72 is: 59,657.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,782.81 : 94,879.96 = 43,248.72 : x
  2. Step 2: Convert to fraction form
    68,782.81/94,879.96 = 43,248.72/x
  3. Step 3: Cross multiply
    68,782.81x = 94,879.96 × 43,248.72
  4. Step 4: Simplify right side
    68,782.81x = 4,103,436,823.65
  5. Step 5: Solve for x
    x = 4,103,436,823.65/68,782.81
  6. Step 6: Final answer
    x = 59,657.88

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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.