Home / 81,813.42-122,732.45-25,641.05

Finding the Fourth Proportional to 81,813.42, 122,732.45 and 25,641.05

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Solution

The fourth proportional to 81,813.42, 122,732.45 and 25,641.05 is: 38,465.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,813.42 : 122,732.45 = 25,641.05 : x
  2. Step 2: Convert to fraction form
    81,813.42/122,732.45 = 25,641.05/x
  3. Step 3: Cross multiply
    81,813.42x = 122,732.45 × 25,641.05
  4. Step 4: Simplify right side
    81,813.42x = 3,146,988,145.21
  5. Step 5: Solve for x
    x = 3,146,988,145.21/81,813.42
  6. Step 6: Final answer
    x = 38,465.43

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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.