Home / 78,711.14-108,620.70-42,901.14

Finding the Fourth Proportional to 78,711.14, 108,620.70 and 42,901.14

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Solution

The fourth proportional to 78,711.14, 108,620.70 and 42,901.14 is: 59,203.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,711.14 : 108,620.70 = 42,901.14 : x
  2. Step 2: Convert to fraction form
    78,711.14/108,620.70 = 42,901.14/x
  3. Step 3: Cross multiply
    78,711.14x = 108,620.70 × 42,901.14
  4. Step 4: Simplify right side
    78,711.14x = 4,659,951,857.60
  5. Step 5: Solve for x
    x = 4,659,951,857.60/78,711.14
  6. Step 6: Final answer
    x = 59,203.21

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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.