Home / 57,721.28-86,590.58-20,274.75

Finding the Fourth Proportional to 57,721.28, 86,590.58 and 20,274.75

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Solution

The fourth proportional to 57,721.28, 86,590.58 and 20,274.75 is: 30,415.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,721.28 : 86,590.58 = 20,274.75 : x
  2. Step 2: Convert to fraction form
    57,721.28/86,590.58 = 20,274.75/x
  3. Step 3: Cross multiply
    57,721.28x = 86,590.58 × 20,274.75
  4. Step 4: Simplify right side
    57,721.28x = 1,755,602,361.86
  5. Step 5: Solve for x
    x = 1,755,602,361.86/57,721.28
  6. Step 6: Final answer
    x = 30,415.17

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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.