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Finding the Fourth Proportional to 87,573, 131,325.48 and 28,394.40

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Solution

The fourth proportional to 87,573, 131,325.48 and 28,394.40 is: 42,580.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,573 : 131,325.48 = 28,394.40 : x
  2. Step 2: Convert to fraction form
    87,573/131,325.48 = 28,394.40/x
  3. Step 3: Cross multiply
    87,573x = 131,325.48 × 28,394.40
  4. Step 4: Simplify right side
    87,573x = 3,728,908,209.31
  5. Step 5: Solve for x
    x = 3,728,908,209.31/87,573
  6. Step 6: Final answer
    x = 42,580.57

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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.