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Finding the Fourth Proportional to 88,392.65, 132,588.97 and 72,777.47

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Solution

The fourth proportional to 88,392.65, 132,588.97 and 72,777.47 is: 109,166.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,392.65 : 132,588.97 = 72,777.47 : x
  2. Step 2: Convert to fraction form
    88,392.65/132,588.97 = 72,777.47/x
  3. Step 3: Cross multiply
    88,392.65x = 132,588.97 × 72,777.47
  4. Step 4: Simplify right side
    88,392.65x = 9,649,488,941.62
  5. Step 5: Solve for x
    x = 9,649,488,941.62/88,392.65
  6. Step 6: Final answer
    x = 109,166.20

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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.