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Finding the Fourth Proportional to 87,016.70, 130,265.85 and 51,938.30

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Solution

The fourth proportional to 87,016.70, 130,265.85 and 51,938.30 is: 77,752.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,016.70 : 130,265.85 = 51,938.30 : x
  2. Step 2: Convert to fraction form
    87,016.70/130,265.85 = 51,938.30/x
  3. Step 3: Cross multiply
    87,016.70x = 130,265.85 × 51,938.30
  4. Step 4: Simplify right side
    87,016.70x = 6,765,786,797.06
  5. Step 5: Solve for x
    x = 6,765,786,797.06/87,016.70
  6. Step 6: Final answer
    x = 77,752.74

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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.