Home / 61,318-91,999.20-30,175.12

Finding the Fourth Proportional to 61,318, 91,999.20 and 30,175.12

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Solution

The fourth proportional to 61,318, 91,999.20 and 30,175.12 is: 45,273.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,318 : 91,999.20 = 30,175.12 : x
  2. Step 2: Convert to fraction form
    61,318/91,999.20 = 30,175.12/x
  3. Step 3: Cross multiply
    61,318x = 91,999.20 × 30,175.12
  4. Step 4: Simplify right side
    61,318x = 2,776,086,899.90
  5. Step 5: Solve for x
    x = 2,776,086,899.90/61,318
  6. Step 6: Final answer
    x = 45,273.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.