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Finding the Fourth Proportional to 61,096.97, 91,617.90 and 21,645.11

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Solution

The fourth proportional to 61,096.97, 91,617.90 and 21,645.11 is: 32,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,096.97 : 91,617.90 = 21,645.11 : x
  2. Step 2: Convert to fraction form
    61,096.97/91,617.90 = 21,645.11/x
  3. Step 3: Cross multiply
    61,096.97x = 91,617.90 × 21,645.11
  4. Step 4: Simplify right side
    61,096.97x = 1,983,079,065.38
  5. Step 5: Solve for x
    x = 1,983,079,065.38/61,096.97
  6. Step 6: Final answer
    x = 32,457.90

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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.