Home / 79,511.05-109,718.77-45,511.80

Finding the Fourth Proportional to 79,511.05, 109,718.77 and 45,511.80

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Solution

The fourth proportional to 79,511.05, 109,718.77 and 45,511.80 is: 62,802.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,511.05 : 109,718.77 = 45,511.80 : x
  2. Step 2: Convert to fraction form
    79,511.05/109,718.77 = 45,511.80/x
  3. Step 3: Cross multiply
    79,511.05x = 109,718.77 × 45,511.80
  4. Step 4: Simplify right side
    79,511.05x = 4,993,498,716.49
  5. Step 5: Solve for x
    x = 4,993,498,716.49/79,511.05
  6. Step 6: Final answer
    x = 62,802.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.