Home / 50,721.47-76,089.12-21,132.38

Finding the Fourth Proportional to 50,721.47, 76,089.12 and 21,132.38

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Solution

The fourth proportional to 50,721.47, 76,089.12 and 21,132.38 is: 31,701.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,721.47 : 76,089.12 = 21,132.38 : x
  2. Step 2: Convert to fraction form
    50,721.47/76,089.12 = 21,132.38/x
  3. Step 3: Cross multiply
    50,721.47x = 76,089.12 × 21,132.38
  4. Step 4: Simplify right side
    50,721.47x = 1,607,943,817.26
  5. Step 5: Solve for x
    x = 1,607,943,817.26/50,721.47
  6. Step 6: Final answer
    x = 31,701.44

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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.