Home / 78,744.36-117,982.89-47,514

Finding the Fourth Proportional to 78,744.36, 117,982.89 and 47,514

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Solution

The fourth proportional to 78,744.36, 117,982.89 and 47,514 is: 71,190.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,744.36 : 117,982.89 = 47,514 : x
  2. Step 2: Convert to fraction form
    78,744.36/117,982.89 = 47,514/x
  3. Step 3: Cross multiply
    78,744.36x = 117,982.89 × 47,514
  4. Step 4: Simplify right side
    78,744.36x = 5,605,839,035.46
  5. Step 5: Solve for x
    x = 5,605,839,035.46/78,744.36
  6. Step 6: Final answer
    x = 71,190.36

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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.