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Finding the Fourth Proportional to 85,508.84, 118,003.56 and 47,785.52

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Solution

The fourth proportional to 85,508.84, 118,003.56 and 47,785.52 is: 65,944.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,508.84 : 118,003.56 = 47,785.52 : x
  2. Step 2: Convert to fraction form
    85,508.84/118,003.56 = 47,785.52/x
  3. Step 3: Cross multiply
    85,508.84x = 118,003.56 × 47,785.52
  4. Step 4: Simplify right side
    85,508.84x = 5,638,861,476.45
  5. Step 5: Solve for x
    x = 5,638,861,476.45/85,508.84
  6. Step 6: Final answer
    x = 65,944.78

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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.