Home / 57,891-86,844.42-20,442.36

Finding the Fourth Proportional to 57,891, 86,844.42 and 20,442.36

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Solution

The fourth proportional to 57,891, 86,844.42 and 20,442.36 is: 30,666.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,891 : 86,844.42 = 20,442.36 : x
  2. Step 2: Convert to fraction form
    57,891/86,844.42 = 20,442.36/x
  3. Step 3: Cross multiply
    57,891x = 86,844.42 × 20,442.36
  4. Step 4: Simplify right side
    57,891x = 1,775,304,897.63
  5. Step 5: Solve for x
    x = 1,775,304,897.63/57,891
  6. Step 6: Final answer
    x = 30,666.34

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1.5x scale

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.