Home / 78,850.20-118,361.70-49,301.40

Finding the Fourth Proportional to 78,850.20, 118,361.70 and 49,301.40

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Solution

The fourth proportional to 78,850.20, 118,361.70 and 49,301.40 is: 74,006.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,850.20 : 118,361.70 = 49,301.40 : x
  2. Step 2: Convert to fraction form
    78,850.20/118,361.70 = 49,301.40/x
  3. Step 3: Cross multiply
    78,850.20x = 118,361.70 × 49,301.40
  4. Step 4: Simplify right side
    78,850.20x = 5,835,397,516.38
  5. Step 5: Solve for x
    x = 5,835,397,516.38/78,850.20
  6. Step 6: Final answer
    x = 74,006.12

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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.