Home / 78,171.36-117,257.02-19,006.62

Finding the Fourth Proportional to 78,171.36, 117,257.02 and 19,006.62

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Solution

The fourth proportional to 78,171.36, 117,257.02 and 19,006.62 is: 28,509.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,171.36 : 117,257.02 = 19,006.62 : x
  2. Step 2: Convert to fraction form
    78,171.36/117,257.02 = 19,006.62/x
  3. Step 3: Cross multiply
    78,171.36x = 117,257.02 × 19,006.62
  4. Step 4: Simplify right side
    78,171.36x = 2,228,659,621.47
  5. Step 5: Solve for x
    x = 2,228,659,621.47/78,171.36
  6. Step 6: Final answer
    x = 28,509.93

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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.