Home / 79,387.41-109,554.21-43,578.03

Finding the Fourth Proportional to 79,387.41, 109,554.21 and 43,578.03

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Solution

The fourth proportional to 79,387.41, 109,554.21 and 43,578.03 is: 60,137.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,387.41 : 109,554.21 = 43,578.03 : x
  2. Step 2: Convert to fraction form
    79,387.41/109,554.21 = 43,578.03/x
  3. Step 3: Cross multiply
    79,387.41x = 109,554.21 × 43,578.03
  4. Step 4: Simplify right side
    79,387.41x = 4,774,156,650.01
  5. Step 5: Solve for x
    x = 4,774,156,650.01/79,387.41
  6. Step 6: Final answer
    x = 60,137.45

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1.5x scale

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.