Home / 78,200.32-117,299.48-19,036.04

Finding the Fourth Proportional to 78,200.32, 117,299.48 and 19,036.04

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Solution

The fourth proportional to 78,200.32, 117,299.48 and 19,036.04 is: 28,553.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,200.32 : 117,299.48 = 19,036.04 : x
  2. Step 2: Convert to fraction form
    78,200.32/117,299.48 = 19,036.04/x
  3. Step 3: Cross multiply
    78,200.32x = 117,299.48 × 19,036.04
  4. Step 4: Simplify right side
    78,200.32x = 2,232,917,593.26
  5. Step 5: Solve for x
    x = 2,232,917,593.26/78,200.32
  6. Step 6: Final answer
    x = 28,553.82

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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.