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Finding the Fourth Proportional to 79,365.72, 109,496.70 and 48,728.28

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Solution

The fourth proportional to 79,365.72, 109,496.70 and 48,728.28 is: 67,227.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,365.72 : 109,496.70 = 48,728.28 : x
  2. Step 2: Convert to fraction form
    79,365.72/109,496.70 = 48,728.28/x
  3. Step 3: Cross multiply
    79,365.72x = 109,496.70 × 48,728.28
  4. Step 4: Simplify right side
    79,365.72x = 5,335,585,856.68
  5. Step 5: Solve for x
    x = 5,335,585,856.68/79,365.72
  6. Step 6: Final answer
    x = 67,227.84

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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.