Home / 79,076.40-109,120.68-45,080.16

Finding the Fourth Proportional to 79,076.40, 109,120.68 and 45,080.16

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Solution

The fourth proportional to 79,076.40, 109,120.68 and 45,080.16 is: 62,207.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,076.40 : 109,120.68 = 45,080.16 : x
  2. Step 2: Convert to fraction form
    79,076.40/109,120.68 = 45,080.16/x
  3. Step 3: Cross multiply
    79,076.40x = 109,120.68 × 45,080.16
  4. Step 4: Simplify right side
    79,076.40x = 4,919,177,713.71
  5. Step 5: Solve for x
    x = 4,919,177,713.71/79,076.40
  6. Step 6: Final answer
    x = 62,207.91

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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.