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Finding the Fourth Proportional to 92,849.30, 139,220.54 and 49,518.78

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Solution

The fourth proportional to 92,849.30, 139,220.54 and 49,518.78 is: 74,249.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,849.30 : 139,220.54 = 49,518.78 : x
  2. Step 2: Convert to fraction form
    92,849.30/139,220.54 = 49,518.78/x
  3. Step 3: Cross multiply
    92,849.30x = 139,220.54 × 49,518.78
  4. Step 4: Simplify right side
    92,849.30x = 6,894,031,490.88
  5. Step 5: Solve for x
    x = 6,894,031,490.88/92,849.30
  6. Step 6: Final answer
    x = 74,249.69

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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.