Home / 79,025.72-109,005.63-55,143.68

Finding the Fourth Proportional to 79,025.72, 109,005.63 and 55,143.68

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Solution

The fourth proportional to 79,025.72, 109,005.63 and 55,143.68 is: 76,063.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,025.72 : 109,005.63 = 55,143.68 : x
  2. Step 2: Convert to fraction form
    79,025.72/109,005.63 = 55,143.68/x
  3. Step 3: Cross multiply
    79,025.72x = 109,005.63 × 55,143.68
  4. Step 4: Simplify right side
    79,025.72x = 6,010,971,578.92
  5. Step 5: Solve for x
    x = 6,010,971,578.92/79,025.72
  6. Step 6: Final answer
    x = 76,063.48

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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.