Home / 79,385.22-109,529.16-51,107.28

Finding the Fourth Proportional to 79,385.22, 109,529.16 and 51,107.28

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Solution

The fourth proportional to 79,385.22, 109,529.16 and 51,107.28 is: 70,513.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,385.22 : 109,529.16 = 51,107.28 : x
  2. Step 2: Convert to fraction form
    79,385.22/109,529.16 = 51,107.28/x
  3. Step 3: Cross multiply
    79,385.22x = 109,529.16 × 51,107.28
  4. Step 4: Simplify right side
    79,385.22x = 5,597,737,448.28
  5. Step 5: Solve for x
    x = 5,597,737,448.28/79,385.22
  6. Step 6: Final answer
    x = 70,513.60

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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.