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Finding the Fourth Proportional to 79,002.76, 109,019.30 and 43,185.64

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Solution

The fourth proportional to 79,002.76, 109,019.30 and 43,185.64 is: 59,593.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,002.76 : 109,019.30 = 43,185.64 : x
  2. Step 2: Convert to fraction form
    79,002.76/109,019.30 = 43,185.64/x
  3. Step 3: Cross multiply
    79,002.76x = 109,019.30 × 43,185.64
  4. Step 4: Simplify right side
    79,002.76x = 4,708,068,242.85
  5. Step 5: Solve for x
    x = 4,708,068,242.85/79,002.76
  6. Step 6: Final answer
    x = 59,593.72

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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.