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Finding the Fourth Proportional to 85,105.92, 117,437.76 and 47,383.68

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Solution

The fourth proportional to 85,105.92, 117,437.76 and 47,383.68 is: 65,384.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,105.92 : 117,437.76 = 47,383.68 : x
  2. Step 2: Convert to fraction form
    85,105.92/117,437.76 = 47,383.68/x
  3. Step 3: Cross multiply
    85,105.92x = 117,437.76 × 47,383.68
  4. Step 4: Simplify right side
    85,105.92x = 5,564,633,239.76
  5. Step 5: Solve for x
    x = 5,564,633,239.76/85,105.92
  6. Step 6: Final answer
    x = 65,384.80

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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.