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Finding the Fourth Proportional to 87,800.74, 131,687.73 and 28,636.31

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Solution

The fourth proportional to 87,800.74, 131,687.73 and 28,636.31 is: 42,950.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,800.74 : 131,687.73 = 28,636.31 : x
  2. Step 2: Convert to fraction form
    87,800.74/131,687.73 = 28,636.31/x
  3. Step 3: Cross multiply
    87,800.74x = 131,687.73 × 28,636.31
  4. Step 4: Simplify right side
    87,800.74x = 3,771,050,988.70
  5. Step 5: Solve for x
    x = 3,771,050,988.70/87,800.74
  6. Step 6: Final answer
    x = 42,950.11

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.