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Finding the Fourth Proportional to 61,800.76, 85,279.80 and 34,939.54

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Solution

The fourth proportional to 61,800.76, 85,279.80 and 34,939.54 is: 48,213.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,800.76 : 85,279.80 = 34,939.54 : x
  2. Step 2: Convert to fraction form
    61,800.76/85,279.80 = 34,939.54/x
  3. Step 3: Cross multiply
    61,800.76x = 85,279.80 × 34,939.54
  4. Step 4: Simplify right side
    61,800.76x = 2,979,636,983.29
  5. Step 5: Solve for x
    x = 2,979,636,983.29/61,800.76
  6. Step 6: Final answer
    x = 48,213.60

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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.