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Finding the Fourth Proportional to 85,292.88, 127,953.90 and 29,129.91

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Solution

The fourth proportional to 85,292.88, 127,953.90 and 29,129.91 is: 43,699.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,292.88 : 127,953.90 = 29,129.91 : x
  2. Step 2: Convert to fraction form
    85,292.88/127,953.90 = 29,129.91/x
  3. Step 3: Cross multiply
    85,292.88x = 127,953.90 × 29,129.91
  4. Step 4: Simplify right side
    85,292.88x = 3,727,285,591.15
  5. Step 5: Solve for x
    x = 3,727,285,591.15/85,292.88
  6. Step 6: Final answer
    x = 43,699.84

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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.