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Finding the Fourth Proportional to 87,805.95, 131,722.74 and 28,627.89

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Solution

The fourth proportional to 87,805.95, 131,722.74 and 28,627.89 is: 42,946.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,805.95 : 131,722.74 = 28,627.89 : x
  2. Step 2: Convert to fraction form
    87,805.95/131,722.74 = 28,627.89/x
  3. Step 3: Cross multiply
    87,805.95x = 131,722.74 × 28,627.89
  4. Step 4: Simplify right side
    87,805.95x = 3,770,944,111.22
  5. Step 5: Solve for x
    x = 3,770,944,111.22/87,805.95
  6. Step 6: Final answer
    x = 42,946.34

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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.