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Finding the Fourth Proportional to 87,262.63, 130,893.94 and 28,104.28

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Solution

The fourth proportional to 87,262.63, 130,893.94 and 28,104.28 is: 42,156.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,262.63 : 130,893.94 = 28,104.28 : x
  2. Step 2: Convert to fraction form
    87,262.63/130,893.94 = 28,104.28/x
  3. Step 3: Cross multiply
    87,262.63x = 130,893.94 × 28,104.28
  4. Step 4: Simplify right side
    87,262.63x = 3,678,679,940.06
  5. Step 5: Solve for x
    x = 3,678,679,940.06/87,262.63
  6. Step 6: Final answer
    x = 42,156.42

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1.5x scale

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.