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Finding the Fourth Proportional to 85,208.84, 127,627 and 70,249.76

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Solution

The fourth proportional to 85,208.84, 127,627 and 70,249.76 is: 105,221.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,208.84 : 127,627 = 70,249.76 : x
  2. Step 2: Convert to fraction form
    85,208.84/127,627 = 70,249.76/x
  3. Step 3: Cross multiply
    85,208.84x = 127,627 × 70,249.76
  4. Step 4: Simplify right side
    85,208.84x = 8,965,766,119.52
  5. Step 5: Solve for x
    x = 8,965,766,119.52/85,208.84
  6. Step 6: Final answer
    x = 105,221.08

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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.