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Finding the Fourth Proportional to 85,320.43, 127,925.97 and 35,434.96

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Solution

The fourth proportional to 85,320.43, 127,925.97 and 35,434.96 is: 53,129.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,320.43 : 127,925.97 = 35,434.96 : x
  2. Step 2: Convert to fraction form
    85,320.43/127,925.97 = 35,434.96/x
  3. Step 3: Cross multiply
    85,320.43x = 127,925.97 × 35,434.96
  4. Step 4: Simplify right side
    85,320.43x = 4,533,051,789.82
  5. Step 5: Solve for x
    x = 4,533,051,789.82/85,320.43
  6. Step 6: Final answer
    x = 53,129.73

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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.