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Finding the Fourth Proportional to 79,086.46, 109,146.74 and 47,254.68

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Solution

The fourth proportional to 79,086.46, 109,146.74 and 47,254.68 is: 65,215.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,086.46 : 109,146.74 = 47,254.68 : x
  2. Step 2: Convert to fraction form
    79,086.46/109,146.74 = 47,254.68/x
  3. Step 3: Cross multiply
    79,086.46x = 109,146.74 × 47,254.68
  4. Step 4: Simplify right side
    79,086.46x = 5,157,694,271.74
  5. Step 5: Solve for x
    x = 5,157,694,271.74/79,086.46
  6. Step 6: Final answer
    x = 65,215.90

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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.