Home / 66,816.48-91,996.92-56,724

Finding the Fourth Proportional to 66,816.48, 91,996.92 and 56,724

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Solution

The fourth proportional to 66,816.48, 91,996.92 and 56,724 is: 78,100.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,816.48 : 91,996.92 = 56,724 : x
  2. Step 2: Convert to fraction form
    66,816.48/91,996.92 = 56,724/x
  3. Step 3: Cross multiply
    66,816.48x = 91,996.92 × 56,724
  4. Step 4: Simplify right side
    66,816.48x = 5,218,433,290.08
  5. Step 5: Solve for x
    x = 5,218,433,290.08/66,816.48
  6. Step 6: Final answer
    x = 78,100.99

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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.