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Finding the Fourth Proportional to 61,808.64, 85,310.04 and 36,318

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Solution

The fourth proportional to 61,808.64, 85,310.04 and 36,318 is: 50,127.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,808.64 : 85,310.04 = 36,318 : x
  2. Step 2: Convert to fraction form
    61,808.64/85,310.04 = 36,318/x
  3. Step 3: Cross multiply
    61,808.64x = 85,310.04 × 36,318
  4. Step 4: Simplify right side
    61,808.64x = 3,098,290,032.72
  5. Step 5: Solve for x
    x = 3,098,290,032.72/61,808.64
  6. Step 6: Final answer
    x = 50,127.13

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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.