Home / 77,891.12-116,836.68-18,726.79

Finding the Fourth Proportional to 77,891.12, 116,836.68 and 18,726.79

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Solution

The fourth proportional to 77,891.12, 116,836.68 and 18,726.79 is: 28,090.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,891.12 : 116,836.68 = 18,726.79 : x
  2. Step 2: Convert to fraction form
    77,891.12/116,836.68 = 18,726.79/x
  3. Step 3: Cross multiply
    77,891.12x = 116,836.68 × 18,726.79
  4. Step 4: Simplify right side
    77,891.12x = 2,187,976,201.14
  5. Step 5: Solve for x
    x = 2,187,976,201.14/77,891.12
  6. Step 6: Final answer
    x = 28,090.19

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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.