Home / 78,731.81-118,165.97-41,318.32

Finding the Fourth Proportional to 78,731.81, 118,165.97 and 41,318.32

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Solution

The fourth proportional to 78,731.81, 118,165.97 and 41,318.32 is: 62,013.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,731.81 : 118,165.97 = 41,318.32 : x
  2. Step 2: Convert to fraction form
    78,731.81/118,165.97 = 41,318.32/x
  3. Step 3: Cross multiply
    78,731.81x = 118,165.97 × 41,318.32
  4. Step 4: Simplify right side
    78,731.81x = 4,882,419,391.01
  5. Step 5: Solve for x
    x = 4,882,419,391.01/78,731.81
  6. Step 6: Final answer
    x = 62,013.30

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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.