Home / 78,981.21-108,994.07-43,171.36

Finding the Fourth Proportional to 78,981.21, 108,994.07 and 43,171.36

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Solution

The fourth proportional to 78,981.21, 108,994.07 and 43,171.36 is: 59,576.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,981.21 : 108,994.07 = 43,171.36 : x
  2. Step 2: Convert to fraction form
    78,981.21/108,994.07 = 43,171.36/x
  3. Step 3: Cross multiply
    78,981.21x = 108,994.07 × 43,171.36
  4. Step 4: Simplify right side
    78,981.21x = 4,705,421,473.01
  5. Step 5: Solve for x
    x = 4,705,421,473.01/78,981.21
  6. Step 6: Final answer
    x = 59,576.47

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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.