Home / 81,266.68-121,900.02-34,486.75

Finding the Fourth Proportional to 81,266.68, 121,900.02 and 34,486.75

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Solution

The fourth proportional to 81,266.68, 121,900.02 and 34,486.75 is: 51,730.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,266.68 : 121,900.02 = 34,486.75 : x
  2. Step 2: Convert to fraction form
    81,266.68/121,900.02 = 34,486.75/x
  3. Step 3: Cross multiply
    81,266.68x = 121,900.02 × 34,486.75
  4. Step 4: Simplify right side
    81,266.68x = 4,203,935,514.74
  5. Step 5: Solve for x
    x = 4,203,935,514.74/81,266.68
  6. Step 6: Final answer
    x = 51,730.13

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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.