Home / 78,619.14-108,496.26-42,811.11

Finding the Fourth Proportional to 78,619.14, 108,496.26 and 42,811.11

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Solution

The fourth proportional to 78,619.14, 108,496.26 and 42,811.11 is: 59,080.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,619.14 : 108,496.26 = 42,811.11 : x
  2. Step 2: Convert to fraction form
    78,619.14/108,496.26 = 42,811.11/x
  3. Step 3: Cross multiply
    78,619.14x = 108,496.26 × 42,811.11
  4. Step 4: Simplify right side
    78,619.14x = 4,644,845,321.45
  5. Step 5: Solve for x
    x = 4,644,845,321.45/78,619.14
  6. Step 6: Final answer
    x = 59,080.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.