Home / 78,346.22-117,259.46-71,342.42

Finding the Fourth Proportional to 78,346.22, 117,259.46 and 71,342.42

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Solution

The fourth proportional to 78,346.22, 117,259.46 and 71,342.42 is: 106,776.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,346.22 : 117,259.46 = 71,342.42 : x
  2. Step 2: Convert to fraction form
    78,346.22/117,259.46 = 71,342.42/x
  3. Step 3: Cross multiply
    78,346.22x = 117,259.46 × 71,342.42
  4. Step 4: Simplify right side
    78,346.22x = 8,365,573,287.58
  5. Step 5: Solve for x
    x = 8,365,573,287.58/78,346.22
  6. Step 6: Final answer
    x = 106,776.99

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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.