Home / 79,021.98-109,089.99-61,076.43

Finding the Fourth Proportional to 79,021.98, 109,089.99 and 61,076.43

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Solution

The fourth proportional to 79,021.98, 109,089.99 and 61,076.43 is: 84,316.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,021.98 : 109,089.99 = 61,076.43 : x
  2. Step 2: Convert to fraction form
    79,021.98/109,089.99 = 61,076.43/x
  3. Step 3: Cross multiply
    79,021.98x = 109,089.99 × 61,076.43
  4. Step 4: Simplify right side
    79,021.98x = 6,662,827,137.94
  5. Step 5: Solve for x
    x = 6,662,827,137.94/79,021.98
  6. Step 6: Final answer
    x = 84,316.12

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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.