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Finding the Fourth Proportional to 88,851.08, 132,628.36 and 77,640.80

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Solution

The fourth proportional to 88,851.08, 132,628.36 and 77,640.80 is: 115,894.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,851.08 : 132,628.36 = 77,640.80 : x
  2. Step 2: Convert to fraction form
    88,851.08/132,628.36 = 77,640.80/x
  3. Step 3: Cross multiply
    88,851.08x = 132,628.36 × 77,640.80
  4. Step 4: Simplify right side
    88,851.08x = 10,297,371,973.09
  5. Step 5: Solve for x
    x = 10,297,371,973.09/88,851.08
  6. Step 6: Final answer
    x = 115,894.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.