Home / 40,779.60-61,158.84-11,190.48

Finding the Fourth Proportional to 40,779.60, 61,158.84 and 11,190.48

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Solution

The fourth proportional to 40,779.60, 61,158.84 and 11,190.48 is: 16,782.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,779.60 : 61,158.84 = 11,190.48 : x
  2. Step 2: Convert to fraction form
    40,779.60/61,158.84 = 11,190.48/x
  3. Step 3: Cross multiply
    40,779.60x = 61,158.84 × 11,190.48
  4. Step 4: Simplify right side
    40,779.60x = 684,396,775.84
  5. Step 5: Solve for x
    x = 684,396,775.84/40,779.60
  6. Step 6: Final answer
    x = 16,782.82

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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.