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Finding the Fourth Proportional to 88,768.40, 132,979.80 and 53,603.60

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Solution

The fourth proportional to 88,768.40, 132,979.80 and 53,603.60 is: 80,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,768.40 : 132,979.80 = 53,603.60 : x
  2. Step 2: Convert to fraction form
    88,768.40/132,979.80 = 53,603.60/x
  3. Step 3: Cross multiply
    88,768.40x = 132,979.80 × 53,603.60
  4. Step 4: Simplify right side
    88,768.40x = 7,128,196,007.28
  5. Step 5: Solve for x
    x = 7,128,196,007.28/88,768.40
  6. Step 6: Final answer
    x = 80,301.05

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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.