Home / 79,541.78-119,309.91-20,378.03

Finding the Fourth Proportional to 79,541.78, 119,309.91 and 20,378.03

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Solution

The fourth proportional to 79,541.78, 119,309.91 and 20,378.03 is: 30,566.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,541.78 : 119,309.91 = 20,378.03 : x
  2. Step 2: Convert to fraction form
    79,541.78/119,309.91 = 20,378.03/x
  3. Step 3: Cross multiply
    79,541.78x = 119,309.91 × 20,378.03
  4. Step 4: Simplify right side
    79,541.78x = 2,431,300,925.28
  5. Step 5: Solve for x
    x = 2,431,300,925.28/79,541.78
  6. Step 6: Final answer
    x = 30,566.34

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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.