Home / 80,779.58-121,160.10-21,619.87

Finding the Fourth Proportional to 80,779.58, 121,160.10 and 21,619.87

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Solution

The fourth proportional to 80,779.58, 121,160.10 and 21,619.87 is: 32,427.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,779.58 : 121,160.10 = 21,619.87 : x
  2. Step 2: Convert to fraction form
    80,779.58/121,160.10 = 21,619.87/x
  3. Step 3: Cross multiply
    80,779.58x = 121,160.10 × 21,619.87
  4. Step 4: Simplify right side
    80,779.58x = 2,619,465,005.39
  5. Step 5: Solve for x
    x = 2,619,465,005.39/80,779.58
  6. Step 6: Final answer
    x = 32,427.32

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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.