Home / 78,942.38-118,369.65-26,323.16

Finding the Fourth Proportional to 78,942.38, 118,369.65 and 26,323.16

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Solution

The fourth proportional to 78,942.38, 118,369.65 and 26,323.16 is: 39,470.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,942.38 : 118,369.65 = 26,323.16 : x
  2. Step 2: Convert to fraction form
    78,942.38/118,369.65 = 26,323.16/x
  3. Step 3: Cross multiply
    78,942.38x = 118,369.65 × 26,323.16
  4. Step 4: Simplify right side
    78,942.38x = 3,115,863,236.09
  5. Step 5: Solve for x
    x = 3,115,863,236.09/78,942.38
  6. Step 6: Final answer
    x = 39,470.09

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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.