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Finding the Fourth Proportional to 87,265.52, 130,903.08 and 28,096.88

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Solution

The fourth proportional to 87,265.52, 130,903.08 and 28,096.88 is: 42,146.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,265.52 : 130,903.08 = 28,096.88 : x
  2. Step 2: Convert to fraction form
    87,265.52/130,903.08 = 28,096.88/x
  3. Step 3: Cross multiply
    87,265.52x = 130,903.08 × 28,096.88
  4. Step 4: Simplify right side
    87,265.52x = 3,677,968,130.39
  5. Step 5: Solve for x
    x = 3,677,968,130.39/87,265.52
  6. Step 6: Final answer
    x = 42,146.87

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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.