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Finding the Fourth Proportional to 78,814.44, 108,804.06 and 60,869.16

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Solution

The fourth proportional to 78,814.44, 108,804.06 and 60,869.16 is: 84,030.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,814.44 : 108,804.06 = 60,869.16 : x
  2. Step 2: Convert to fraction form
    78,814.44/108,804.06 = 60,869.16/x
  3. Step 3: Cross multiply
    78,814.44x = 108,804.06 × 60,869.16
  4. Step 4: Simplify right side
    78,814.44x = 6,622,811,736.79
  5. Step 5: Solve for x
    x = 6,622,811,736.79/78,814.44
  6. Step 6: Final answer
    x = 84,030.44

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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.