Home / 79,799.72-109,325.16-76,808.39

Finding the Fourth Proportional to 79,799.72, 109,325.16 and 76,808.39

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Solution

The fourth proportional to 79,799.72, 109,325.16 and 76,808.39 is: 105,227.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,799.72 : 109,325.16 = 76,808.39 : x
  2. Step 2: Convert to fraction form
    79,799.72/109,325.16 = 76,808.39/x
  3. Step 3: Cross multiply
    79,799.72x = 109,325.16 × 76,808.39
  4. Step 4: Simplify right side
    79,799.72x = 8,397,088,979.47
  5. Step 5: Solve for x
    x = 8,397,088,979.47/79,799.72
  6. Step 6: Final answer
    x = 105,227.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.