Home / 79,037.72-109,022.19-55,155.68

Finding the Fourth Proportional to 79,037.72, 109,022.19 and 55,155.68

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Solution

The fourth proportional to 79,037.72, 109,022.19 and 55,155.68 is: 76,080.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,037.72 : 109,022.19 = 55,155.68 : x
  2. Step 2: Convert to fraction form
    79,037.72/109,022.19 = 55,155.68/x
  3. Step 3: Cross multiply
    79,037.72x = 109,022.19 × 55,155.68
  4. Step 4: Simplify right side
    79,037.72x = 6,013,193,024.54
  5. Step 5: Solve for x
    x = 6,013,193,024.54/79,037.72
  6. Step 6: Final answer
    x = 76,080.04

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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.