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Finding the Fourth Proportional to 61,971.70, 85,516.10 and 35,118.43

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Solution

The fourth proportional to 61,971.70, 85,516.10 and 35,118.43 is: 48,460.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,971.70 : 85,516.10 = 35,118.43 : x
  2. Step 2: Convert to fraction form
    61,971.70/85,516.10 = 35,118.43/x
  3. Step 3: Cross multiply
    61,971.70x = 85,516.10 × 35,118.43
  4. Step 4: Simplify right side
    61,971.70x = 3,003,191,171.72
  5. Step 5: Solve for x
    x = 3,003,191,171.72/61,971.70
  6. Step 6: Final answer
    x = 48,460.69

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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.