Home / 82,547.07-123,820.89-20,217.57

Finding the Fourth Proportional to 82,547.07, 123,820.89 and 20,217.57

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Solution

The fourth proportional to 82,547.07, 123,820.89 and 20,217.57 is: 30,326.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,547.07 : 123,820.89 = 20,217.57 : x
  2. Step 2: Convert to fraction form
    82,547.07/123,820.89 = 20,217.57/x
  3. Step 3: Cross multiply
    82,547.07x = 123,820.89 × 20,217.57
  4. Step 4: Simplify right side
    82,547.07x = 2,503,357,511.04
  5. Step 5: Solve for x
    x = 2,503,357,511.04/82,547.07
  6. Step 6: Final answer
    x = 30,326.42

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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.