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Finding the Fourth Proportional to 61,971.58, 85,493.28 and 36,806.50

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Solution

The fourth proportional to 61,971.58, 85,493.28 and 36,806.50 is: 50,776.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,971.58 : 85,493.28 = 36,806.50 : x
  2. Step 2: Convert to fraction form
    61,971.58/85,493.28 = 36,806.50/x
  3. Step 3: Cross multiply
    61,971.58x = 85,493.28 × 36,806.50
  4. Step 4: Simplify right side
    61,971.58x = 3,146,708,410.32
  5. Step 5: Solve for x
    x = 3,146,708,410.32/61,971.58
  6. Step 6: Final answer
    x = 50,776.64

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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.