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Finding the Fourth Proportional to 85,512.14, 118,006.14 and 47,786.40

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Solution

The fourth proportional to 85,512.14, 118,006.14 and 47,786.40 is: 65,944.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,512.14 : 118,006.14 = 47,786.40 : x
  2. Step 2: Convert to fraction form
    85,512.14/118,006.14 = 47,786.40/x
  3. Step 3: Cross multiply
    85,512.14x = 118,006.14 × 47,786.40
  4. Step 4: Simplify right side
    85,512.14x = 5,639,088,608.50
  5. Step 5: Solve for x
    x = 5,639,088,608.50/85,512.14
  6. Step 6: Final answer
    x = 65,944.89

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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.