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Finding the Fourth Proportional to 79,130.32, 109,170.03 and 51,921.42

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Solution

The fourth proportional to 79,130.32, 109,170.03 and 51,921.42 is: 71,632.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,130.32 : 109,170.03 = 51,921.42 : x
  2. Step 2: Convert to fraction form
    79,130.32/109,170.03 = 51,921.42/x
  3. Step 3: Cross multiply
    79,130.32x = 109,170.03 × 51,921.42
  4. Step 4: Simplify right side
    79,130.32x = 5,668,263,086.38
  5. Step 5: Solve for x
    x = 5,668,263,086.38/79,130.32
  6. Step 6: Final answer
    x = 71,632.00

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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.