Home / 76,918.66-106,195.80-58,979.20

Finding the Fourth Proportional to 76,918.66, 106,195.80 and 58,979.20

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Solution

The fourth proportional to 76,918.66, 106,195.80 and 58,979.20 is: 81,428.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,918.66 : 106,195.80 = 58,979.20 : x
  2. Step 2: Convert to fraction form
    76,918.66/106,195.80 = 58,979.20/x
  3. Step 3: Cross multiply
    76,918.66x = 106,195.80 × 58,979.20
  4. Step 4: Simplify right side
    76,918.66x = 6,263,343,327.36
  5. Step 5: Solve for x
    x = 6,263,343,327.36/76,918.66
  6. Step 6: Final answer
    x = 81,428.14

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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.