Home / 81,282.10-121,874.55-41,916.10

Finding the Fourth Proportional to 81,282.10, 121,874.55 and 41,916.10

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Solution

The fourth proportional to 81,282.10, 121,874.55 and 41,916.10 is: 62,849.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,282.10 : 121,874.55 = 41,916.10 : x
  2. Step 2: Convert to fraction form
    81,282.10/121,874.55 = 41,916.10/x
  3. Step 3: Cross multiply
    81,282.10x = 121,874.55 × 41,916.10
  4. Step 4: Simplify right side
    81,282.10x = 5,108,505,825.26
  5. Step 5: Solve for x
    x = 5,108,505,825.26/81,282.10
  6. Step 6: Final answer
    x = 62,849.09

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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.