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Finding the Fourth Proportional to 62,272, 93,408.82 and 20,719

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Solution

The fourth proportional to 62,272, 93,408.82 and 20,719 is: 31,078.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,272 : 93,408.82 = 20,719 : x
  2. Step 2: Convert to fraction form
    62,272/93,408.82 = 20,719/x
  3. Step 3: Cross multiply
    62,272x = 93,408.82 × 20,719
  4. Step 4: Simplify right side
    62,272x = 1,935,337,341.58
  5. Step 5: Solve for x
    x = 1,935,337,341.58/62,272
  6. Step 6: Final answer
    x = 31,078.77

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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.