Home / 53,940.30-81,007.65-52,190.70

Finding the Fourth Proportional to 53,940.30, 81,007.65 and 52,190.70

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Solution

The fourth proportional to 53,940.30, 81,007.65 and 52,190.70 is: 78,380.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,940.30 : 81,007.65 = 52,190.70 : x
  2. Step 2: Convert to fraction form
    53,940.30/81,007.65 = 52,190.70/x
  3. Step 3: Cross multiply
    53,940.30x = 81,007.65 × 52,190.70
  4. Step 4: Simplify right side
    53,940.30x = 4,227,845,958.86
  5. Step 5: Solve for x
    x = 4,227,845,958.86/53,940.30
  6. Step 6: Final answer
    x = 78,380.10

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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.