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Finding the Fourth Proportional to 68,779.86, 103,036.96 and 50,736.30

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Solution

The fourth proportional to 68,779.86, 103,036.96 and 50,736.30 is: 76,006.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,779.86 : 103,036.96 = 50,736.30 : x
  2. Step 2: Convert to fraction form
    68,779.86/103,036.96 = 50,736.30/x
  3. Step 3: Cross multiply
    68,779.86x = 103,036.96 × 50,736.30
  4. Step 4: Simplify right side
    68,779.86x = 5,227,714,113.65
  5. Step 5: Solve for x
    x = 5,227,714,113.65/68,779.86
  6. Step 6: Final answer
    x = 76,006.47

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1.5x scale

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.