Home / 80,846.68-121,268.94-20,875.36

Finding the Fourth Proportional to 80,846.68, 121,268.94 and 20,875.36

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Solution

The fourth proportional to 80,846.68, 121,268.94 and 20,875.36 is: 31,312.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,846.68 : 121,268.94 = 20,875.36 : x
  2. Step 2: Convert to fraction form
    80,846.68/121,268.94 = 20,875.36/x
  3. Step 3: Cross multiply
    80,846.68x = 121,268.94 × 20,875.36
  4. Step 4: Simplify right side
    80,846.68x = 2,531,532,779.32
  5. Step 5: Solve for x
    x = 2,531,532,779.32/80,846.68
  6. Step 6: Final answer
    x = 31,312.76

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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.