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Finding the Fourth Proportional to 78,342.26, 108,007.90 and 62,263.26

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Solution

The fourth proportional to 78,342.26, 108,007.90 and 62,263.26 is: 85,840.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,342.26 : 108,007.90 = 62,263.26 : x
  2. Step 2: Convert to fraction form
    78,342.26/108,007.90 = 62,263.26/x
  3. Step 3: Cross multiply
    78,342.26x = 108,007.90 × 62,263.26
  4. Step 4: Simplify right side
    78,342.26x = 6,724,923,959.75
  5. Step 5: Solve for x
    x = 6,724,923,959.75/78,342.26
  6. Step 6: Final answer
    x = 85,840.31

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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.