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Finding the Fourth Proportional to 88,393.58, 132,590.38 and 72,778.40

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Solution

The fourth proportional to 88,393.58, 132,590.38 and 72,778.40 is: 109,167.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,393.58 : 132,590.38 = 72,778.40 : x
  2. Step 2: Convert to fraction form
    88,393.58/132,590.38 = 72,778.40/x
  3. Step 3: Cross multiply
    88,393.58x = 132,590.38 × 72,778.40
  4. Step 4: Simplify right side
    88,393.58x = 9,649,715,711.79
  5. Step 5: Solve for x
    x = 9,649,715,711.79/88,393.58
  6. Step 6: Final answer
    x = 109,167.61

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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.