Home / 72,779.37-109,169.06-20,188.85

Finding the Fourth Proportional to 72,779.37, 109,169.06 and 20,188.85

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Solution

The fourth proportional to 72,779.37, 109,169.06 and 20,188.85 is: 30,283.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,779.37 : 109,169.06 = 20,188.85 : x
  2. Step 2: Convert to fraction form
    72,779.37/109,169.06 = 20,188.85/x
  3. Step 3: Cross multiply
    72,779.37x = 109,169.06 × 20,188.85
  4. Step 4: Simplify right side
    72,779.37x = 2,203,997,130.19
  5. Step 5: Solve for x
    x = 2,203,997,130.19/72,779.37
  6. Step 6: Final answer
    x = 30,283.27

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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.