Home / 75,771.46-113,511.68-42,390.36

Finding the Fourth Proportional to 75,771.46, 113,511.68 and 42,390.36

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Solution

The fourth proportional to 75,771.46, 113,511.68 and 42,390.36 is: 63,504.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,771.46 : 113,511.68 = 42,390.36 : x
  2. Step 2: Convert to fraction form
    75,771.46/113,511.68 = 42,390.36/x
  3. Step 3: Cross multiply
    75,771.46x = 113,511.68 × 42,390.36
  4. Step 4: Simplify right side
    75,771.46x = 4,811,800,979.40
  5. Step 5: Solve for x
    x = 4,811,800,979.40/75,771.46
  6. Step 6: Final answer
    x = 63,504.13

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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.