Home / 78,640.28-108,519.18-44,639.64

Finding the Fourth Proportional to 78,640.28, 108,519.18 and 44,639.64

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Solution

The fourth proportional to 78,640.28, 108,519.18 and 44,639.64 is: 61,600.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,640.28 : 108,519.18 = 44,639.64 : x
  2. Step 2: Convert to fraction form
    78,640.28/108,519.18 = 44,639.64/x
  3. Step 3: Cross multiply
    78,640.28x = 108,519.18 × 44,639.64
  4. Step 4: Simplify right side
    78,640.28x = 4,844,257,128.30
  5. Step 5: Solve for x
    x = 4,844,257,128.30/78,640.28
  6. Step 6: Final answer
    x = 61,600.20

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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.