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Finding the Fourth Proportional to 84,611.46, 126,918.09 and 34,678.74

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Solution

The fourth proportional to 84,611.46, 126,918.09 and 34,678.74 is: 52,018.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,611.46 : 126,918.09 = 34,678.74 : x
  2. Step 2: Convert to fraction form
    84,611.46/126,918.09 = 34,678.74/x
  3. Step 3: Cross multiply
    84,611.46x = 126,918.09 × 34,678.74
  4. Step 4: Simplify right side
    84,611.46x = 4,401,359,444.41
  5. Step 5: Solve for x
    x = 4,401,359,444.41/84,611.46
  6. Step 6: Final answer
    x = 52,018.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.