Home / 81,268.68-121,903.02-34,488.75

Finding the Fourth Proportional to 81,268.68, 121,903.02 and 34,488.75

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Solution

The fourth proportional to 81,268.68, 121,903.02 and 34,488.75 is: 51,733.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,268.68 : 121,903.02 = 34,488.75 : x
  2. Step 2: Convert to fraction form
    81,268.68/121,903.02 = 34,488.75/x
  3. Step 3: Cross multiply
    81,268.68x = 121,903.02 × 34,488.75
  4. Step 4: Simplify right side
    81,268.68x = 4,204,282,781.03
  5. Step 5: Solve for x
    x = 4,204,282,781.03/81,268.68
  6. Step 6: Final answer
    x = 51,733.13

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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.