Home / 79,127.79-109,193.61-45,147.27

Finding the Fourth Proportional to 79,127.79, 109,193.61 and 45,147.27

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Solution

The fourth proportional to 79,127.79, 109,193.61 and 45,147.27 is: 62,301.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,127.79 : 109,193.61 = 45,147.27 : x
  2. Step 2: Convert to fraction form
    79,127.79/109,193.61 = 45,147.27/x
  3. Step 3: Cross multiply
    79,127.79x = 109,193.61 × 45,147.27
  4. Step 4: Simplify right side
    79,127.79x = 4,929,793,392.94
  5. Step 5: Solve for x
    x = 4,929,793,392.94/79,127.79
  6. Step 6: Final answer
    x = 62,301.67

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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.