Home / 79,409.21-109,576.64-47,577.29

Finding the Fourth Proportional to 79,409.21, 109,576.64 and 47,577.29

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Solution

The fourth proportional to 79,409.21, 109,576.64 and 47,577.29 is: 65,651.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,409.21 : 109,576.64 = 47,577.29 : x
  2. Step 2: Convert to fraction form
    79,409.21/109,576.64 = 47,577.29/x
  3. Step 3: Cross multiply
    79,409.21x = 109,576.64 × 47,577.29
  4. Step 4: Simplify right side
    79,409.21x = 5,213,359,149.57
  5. Step 5: Solve for x
    x = 5,213,359,149.57/79,409.21
  6. Step 6: Final answer
    x = 65,651.82

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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.