Home / 78,786.28-118,164.06-23,382.76

Finding the Fourth Proportional to 78,786.28, 118,164.06 and 23,382.76

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Solution

The fourth proportional to 78,786.28, 118,164.06 and 23,382.76 is: 35,069.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,786.28 : 118,164.06 = 23,382.76 : x
  2. Step 2: Convert to fraction form
    78,786.28/118,164.06 = 23,382.76/x
  3. Step 3: Cross multiply
    78,786.28x = 118,164.06 × 23,382.76
  4. Step 4: Simplify right side
    78,786.28x = 2,763,001,855.61
  5. Step 5: Solve for x
    x = 2,763,001,855.61/78,786.28
  6. Step 6: Final answer
    x = 35,069.58

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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.