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Finding the Fourth Proportional to 85,105.68, 127,677.48 and 25,945.92

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Solution

The fourth proportional to 85,105.68, 127,677.48 and 25,945.92 is: 38,924.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,105.68 : 127,677.48 = 25,945.92 : x
  2. Step 2: Convert to fraction form
    85,105.68/127,677.48 = 25,945.92/x
  3. Step 3: Cross multiply
    85,105.68x = 127,677.48 × 25,945.92
  4. Step 4: Simplify right side
    85,105.68x = 3,312,709,681.88
  5. Step 5: Solve for x
    x = 3,312,709,681.88/85,105.68
  6. Step 6: Final answer
    x = 38,924.66

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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.