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Finding the Fourth Proportional to 87,370.60, 131,027.10 and 31,959.40

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Solution

The fourth proportional to 87,370.60, 131,027.10 and 31,959.40 is: 47,928.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,370.60 : 131,027.10 = 31,959.40 : x
  2. Step 2: Convert to fraction form
    87,370.60/131,027.10 = 31,959.40/x
  3. Step 3: Cross multiply
    87,370.60x = 131,027.10 × 31,959.40
  4. Step 4: Simplify right side
    87,370.60x = 4,187,547,499.74
  5. Step 5: Solve for x
    x = 4,187,547,499.74/87,370.60
  6. Step 6: Final answer
    x = 47,928.57

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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.