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Finding the Fourth Proportional to 87,270.60, 130,800.02 and 39,820.64

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Solution

The fourth proportional to 87,270.60, 130,800.02 and 39,820.64 is: 59,682.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,270.60 : 130,800.02 = 39,820.64 : x
  2. Step 2: Convert to fraction form
    87,270.60/130,800.02 = 39,820.64/x
  3. Step 3: Cross multiply
    87,270.60x = 130,800.02 × 39,820.64
  4. Step 4: Simplify right side
    87,270.60x = 5,208,540,508.41
  5. Step 5: Solve for x
    x = 5,208,540,508.41/87,270.60
  6. Step 6: Final answer
    x = 59,682.65

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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.