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Finding the Fourth Proportional to 78,318.21, 108,053.41 and 44,323.32

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Solution

The fourth proportional to 78,318.21, 108,053.41 and 44,323.32 is: 61,151.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,318.21 : 108,053.41 = 44,323.32 : x
  2. Step 2: Convert to fraction form
    78,318.21/108,053.41 = 44,323.32/x
  3. Step 3: Cross multiply
    78,318.21x = 108,053.41 × 44,323.32
  4. Step 4: Simplify right side
    78,318.21x = 4,789,286,246.02
  5. Step 5: Solve for x
    x = 4,789,286,246.02/78,318.21
  6. Step 6: Final answer
    x = 61,151.63

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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.