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Finding the Fourth Proportional to 86,766.60, 130,182.30 and 34,212.72

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Solution

The fourth proportional to 86,766.60, 130,182.30 and 34,212.72 is: 51,331.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,766.60 : 130,182.30 = 34,212.72 : x
  2. Step 2: Convert to fraction form
    86,766.60/130,182.30 = 34,212.72/x
  3. Step 3: Cross multiply
    86,766.60x = 130,182.30 × 34,212.72
  4. Step 4: Simplify right side
    86,766.60x = 4,453,890,578.86
  5. Step 5: Solve for x
    x = 4,453,890,578.86/86,766.60
  6. Step 6: Final answer
    x = 51,331.86

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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.