Home / 79,037.47-109,021.84-55,155.43

Finding the Fourth Proportional to 79,037.47, 109,021.84 and 55,155.43

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Solution

The fourth proportional to 79,037.47, 109,021.84 and 55,155.43 is: 76,079.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,037.47 : 109,021.84 = 55,155.43 : x
  2. Step 2: Convert to fraction form
    79,037.47/109,021.84 = 55,155.43/x
  3. Step 3: Cross multiply
    79,037.47x = 109,021.84 × 55,155.43
  4. Step 4: Simplify right side
    79,037.47x = 6,013,146,464.59
  5. Step 5: Solve for x
    x = 6,013,146,464.59/79,037.47
  6. Step 6: Final answer
    x = 76,079.69

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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.