Home / 79,018.16-109,047.12-43,209.68

Finding the Fourth Proportional to 79,018.16, 109,047.12 and 43,209.68

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Solution

The fourth proportional to 79,018.16, 109,047.12 and 43,209.68 is: 59,630.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,018.16 : 109,047.12 = 43,209.68 : x
  2. Step 2: Convert to fraction form
    79,018.16/109,047.12 = 43,209.68/x
  3. Step 3: Cross multiply
    79,018.16x = 109,047.12 × 43,209.68
  4. Step 4: Simplify right side
    79,018.16x = 4,711,891,160.12
  5. Step 5: Solve for x
    x = 4,711,891,160.12/79,018.16
  6. Step 6: Final answer
    x = 59,630.48

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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.