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Finding the Fourth Proportional to 88,203.42, 132,009.48 and 72,407.61

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Solution

The fourth proportional to 88,203.42, 132,009.48 and 72,407.61 is: 108,368.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,203.42 : 132,009.48 = 72,407.61 : x
  2. Step 2: Convert to fraction form
    88,203.42/132,009.48 = 72,407.61/x
  3. Step 3: Cross multiply
    88,203.42x = 132,009.48 × 72,407.61
  4. Step 4: Simplify right side
    88,203.42x = 9,558,490,944.14
  5. Step 5: Solve for x
    x = 9,558,490,944.14/88,203.42
  6. Step 6: Final answer
    x = 108,368.71

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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.