Home / 78,569.14-117,868.38-26,015.62

Finding the Fourth Proportional to 78,569.14, 117,868.38 and 26,015.62

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Solution

The fourth proportional to 78,569.14, 117,868.38 and 26,015.62 is: 39,028.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,569.14 : 117,868.38 = 26,015.62 : x
  2. Step 2: Convert to fraction form
    78,569.14/117,868.38 = 26,015.62/x
  3. Step 3: Cross multiply
    78,569.14x = 117,868.38 × 26,015.62
  4. Step 4: Simplify right side
    78,569.14x = 3,066,418,984.10
  5. Step 5: Solve for x
    x = 3,066,418,984.10/78,569.14
  6. Step 6: Final answer
    x = 39,028.29

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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.