Home / 56,680.80-84,967.20-21,132.60

Finding the Fourth Proportional to 56,680.80, 84,967.20 and 21,132.60

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Solution

The fourth proportional to 56,680.80, 84,967.20 and 21,132.60 is: 31,678.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,680.80 : 84,967.20 = 21,132.60 : x
  2. Step 2: Convert to fraction form
    56,680.80/84,967.20 = 21,132.60/x
  3. Step 3: Cross multiply
    56,680.80x = 84,967.20 × 21,132.60
  4. Step 4: Simplify right side
    56,680.80x = 1,795,577,850.72
  5. Step 5: Solve for x
    x = 1,795,577,850.72/56,680.80
  6. Step 6: Final answer
    x = 31,678.77

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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.