Home / 75,530.20-113,198.10-45,916.60

Finding the Fourth Proportional to 75,530.20, 113,198.10 and 45,916.60

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Solution

The fourth proportional to 75,530.20, 113,198.10 and 45,916.60 is: 68,815.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,530.20 : 113,198.10 = 45,916.60 : x
  2. Step 2: Convert to fraction form
    75,530.20/113,198.10 = 45,916.60/x
  3. Step 3: Cross multiply
    75,530.20x = 113,198.10 × 45,916.60
  4. Step 4: Simplify right side
    75,530.20x = 5,197,671,878.46
  5. Step 5: Solve for x
    x = 5,197,671,878.46/75,530.20
  6. Step 6: Final answer
    x = 68,815.81

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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.