Home / 78,200.60-117,282.92-46,619.56

Finding the Fourth Proportional to 78,200.60, 117,282.92 and 46,619.56

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Solution

The fourth proportional to 78,200.60, 117,282.92 and 46,619.56 is: 69,918.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,200.60 : 117,282.92 = 46,619.56 : x
  2. Step 2: Convert to fraction form
    78,200.60/117,282.92 = 46,619.56/x
  3. Step 3: Cross multiply
    78,200.60x = 117,282.92 × 46,619.56
  4. Step 4: Simplify right side
    78,200.60x = 5,467,678,125.92
  5. Step 5: Solve for x
    x = 5,467,678,125.92/78,200.60
  6. Step 6: Final answer
    x = 69,918.62

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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.