Home / 72,610.83-100,198.01-40,779.05

Finding the Fourth Proportional to 72,610.83, 100,198.01 and 40,779.05

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Solution

The fourth proportional to 72,610.83, 100,198.01 and 40,779.05 is: 56,272.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,610.83 : 100,198.01 = 40,779.05 : x
  2. Step 2: Convert to fraction form
    72,610.83/100,198.01 = 40,779.05/x
  3. Step 3: Cross multiply
    72,610.83x = 100,198.01 × 40,779.05
  4. Step 4: Simplify right side
    72,610.83x = 4,085,979,260.65
  5. Step 5: Solve for x
    x = 4,085,979,260.65/72,610.83
  6. Step 6: Final answer
    x = 56,272.31

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1.5x scale

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.