Home / 81,396.14-112,439.86-61,406.96

Finding the Fourth Proportional to 81,396.14, 112,439.86 and 61,406.96

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Solution

The fourth proportional to 81,396.14, 112,439.86 and 61,406.96 is: 84,827.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,396.14 : 112,439.86 = 61,406.96 : x
  2. Step 2: Convert to fraction form
    81,396.14/112,439.86 = 61,406.96/x
  3. Step 3: Cross multiply
    81,396.14x = 112,439.86 × 61,406.96
  4. Step 4: Simplify right side
    81,396.14x = 6,904,589,985.43
  5. Step 5: Solve for x
    x = 6,904,589,985.43/81,396.14
  6. Step 6: Final answer
    x = 84,827.00

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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.