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Finding the Fourth Proportional to 61,379.50, 84,703.80 and 36,229

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Solution

The fourth proportional to 61,379.50, 84,703.80 and 36,229 is: 49,996.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,379.50 : 84,703.80 = 36,229 : x
  2. Step 2: Convert to fraction form
    61,379.50/84,703.80 = 36,229/x
  3. Step 3: Cross multiply
    61,379.50x = 84,703.80 × 36,229
  4. Step 4: Simplify right side
    61,379.50x = 3,068,733,970.20
  5. Step 5: Solve for x
    x = 3,068,733,970.20/61,379.50
  6. Step 6: Final answer
    x = 49,996.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.