Home / 45,515.69-68,281.17-20,555.20

Finding the Fourth Proportional to 45,515.69, 68,281.17 and 20,555.20

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Solution

The fourth proportional to 45,515.69, 68,281.17 and 20,555.20 is: 30,836.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,515.69 : 68,281.17 = 20,555.20 : x
  2. Step 2: Convert to fraction form
    45,515.69/68,281.17 = 20,555.20/x
  3. Step 3: Cross multiply
    45,515.69x = 68,281.17 × 20,555.20
  4. Step 4: Simplify right side
    45,515.69x = 1,403,533,105.58
  5. Step 5: Solve for x
    x = 1,403,533,105.58/45,515.69
  6. Step 6: Final answer
    x = 30,836.25

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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.