Home / 84,918.16-116,919.36-77,044.96

Finding the Fourth Proportional to 84,918.16, 116,919.36 and 77,044.96

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Solution

The fourth proportional to 84,918.16, 116,919.36 and 77,044.96 is: 106,079.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,918.16 : 116,919.36 = 77,044.96 : x
  2. Step 2: Convert to fraction form
    84,918.16/116,919.36 = 77,044.96/x
  3. Step 3: Cross multiply
    84,918.16x = 116,919.36 × 77,044.96
  4. Step 4: Simplify right side
    84,918.16x = 9,008,047,414.43
  5. Step 5: Solve for x
    x = 9,008,047,414.43/84,918.16
  6. Step 6: Final answer
    x = 106,079.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.