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Finding the Fourth Proportional to 87,191.63, 130,754.25 and 51,662.98

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Solution

The fourth proportional to 87,191.63, 130,754.25 and 51,662.98 is: 77,474.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,191.63 : 130,754.25 = 51,662.98 : x
  2. Step 2: Convert to fraction form
    87,191.63/130,754.25 = 51,662.98/x
  3. Step 3: Cross multiply
    87,191.63x = 130,754.25 × 51,662.98
  4. Step 4: Simplify right side
    87,191.63x = 6,755,153,419.74
  5. Step 5: Solve for x
    x = 6,755,153,419.74/87,191.63
  6. Step 6: Final answer
    x = 77,474.79

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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.