Home / 78,470.41-117,687.87-22,309.28

Finding the Fourth Proportional to 78,470.41, 117,687.87 and 22,309.28

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Solution

The fourth proportional to 78,470.41, 117,687.87 and 22,309.28 is: 33,458.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,470.41 : 117,687.87 = 22,309.28 : x
  2. Step 2: Convert to fraction form
    78,470.41/117,687.87 = 22,309.28/x
  3. Step 3: Cross multiply
    78,470.41x = 117,687.87 × 22,309.28
  4. Step 4: Simplify right side
    78,470.41x = 2,625,531,055.99
  5. Step 5: Solve for x
    x = 2,625,531,055.99/78,470.41
  6. Step 6: Final answer
    x = 33,458.87

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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.