Home / 78,453.84-117,678.01-25,145.03

Finding the Fourth Proportional to 78,453.84, 117,678.01 and 25,145.03

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Solution

The fourth proportional to 78,453.84, 117,678.01 and 25,145.03 is: 37,716.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,453.84 : 117,678.01 = 25,145.03 : x
  2. Step 2: Convert to fraction form
    78,453.84/117,678.01 = 25,145.03/x
  3. Step 3: Cross multiply
    78,453.84x = 117,678.01 × 25,145.03
  4. Step 4: Simplify right side
    78,453.84x = 2,959,017,091.79
  5. Step 5: Solve for x
    x = 2,959,017,091.79/78,453.84
  6. Step 6: Final answer
    x = 37,716.66

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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.