Home / 77,428.26-116,147.82-30,681

Finding the Fourth Proportional to 77,428.26, 116,147.82 and 30,681

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Solution

The fourth proportional to 77,428.26, 116,147.82 and 30,681 is: 46,023.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,428.26 : 116,147.82 = 30,681 : x
  2. Step 2: Convert to fraction form
    77,428.26/116,147.82 = 30,681/x
  3. Step 3: Cross multiply
    77,428.26x = 116,147.82 × 30,681
  4. Step 4: Simplify right side
    77,428.26x = 3,563,531,265.42
  5. Step 5: Solve for x
    x = 3,563,531,265.42/77,428.26
  6. Step 6: Final answer
    x = 46,023.65

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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.