Home / 78,711.11-108,620.07-42,901.41

Finding the Fourth Proportional to 78,711.11, 108,620.07 and 42,901.41

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Solution

The fourth proportional to 78,711.11, 108,620.07 and 42,901.41 is: 59,203.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,711.11 : 108,620.07 = 42,901.41 : x
  2. Step 2: Convert to fraction form
    78,711.11/108,620.07 = 42,901.41/x
  3. Step 3: Cross multiply
    78,711.11x = 108,620.07 × 42,901.41
  4. Step 4: Simplify right side
    78,711.11x = 4,659,954,157.30
  5. Step 5: Solve for x
    x = 4,659,954,157.30/78,711.11
  6. Step 6: Final answer
    x = 59,203.26

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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.