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Finding the Fourth Proportional to 85,070.54, 127,624.79 and 25,910.78

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Solution

The fourth proportional to 85,070.54, 127,624.79 and 25,910.78 is: 38,871.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,070.54 : 127,624.79 = 25,910.78 : x
  2. Step 2: Convert to fraction form
    85,070.54/127,624.79 = 25,910.78/x
  3. Step 3: Cross multiply
    85,070.54x = 127,624.79 × 25,910.78
  4. Step 4: Simplify right side
    85,070.54x = 3,306,857,088.56
  5. Step 5: Solve for x
    x = 3,306,857,088.56/85,070.54
  6. Step 6: Final answer
    x = 38,871.94

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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.