Home / 77,972.78-116,958.14-18,808.02

Finding the Fourth Proportional to 77,972.78, 116,958.14 and 18,808.02

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Solution

The fourth proportional to 77,972.78, 116,958.14 and 18,808.02 is: 28,211.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,972.78 : 116,958.14 = 18,808.02 : x
  2. Step 2: Convert to fraction form
    77,972.78/116,958.14 = 18,808.02/x
  3. Step 3: Cross multiply
    77,972.78x = 116,958.14 × 18,808.02
  4. Step 4: Simplify right side
    77,972.78x = 2,199,751,036.28
  5. Step 5: Solve for x
    x = 2,199,751,036.28/77,972.78
  6. Step 6: Final answer
    x = 28,211.78

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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.