Home / 78,277.48-117,260.70-43,129.96

Finding the Fourth Proportional to 78,277.48, 117,260.70 and 43,129.96

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Solution

The fourth proportional to 78,277.48, 117,260.70 and 43,129.96 is: 64,609.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,277.48 : 117,260.70 = 43,129.96 : x
  2. Step 2: Convert to fraction form
    78,277.48/117,260.70 = 43,129.96/x
  3. Step 3: Cross multiply
    78,277.48x = 117,260.70 × 43,129.96
  4. Step 4: Simplify right side
    78,277.48x = 5,057,449,300.57
  5. Step 5: Solve for x
    x = 5,057,449,300.57/78,277.48
  6. Step 6: Final answer
    x = 64,609.25

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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.