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Finding the Fourth Proportional to 88,383, 121,968.56 and 48,639

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Solution

The fourth proportional to 88,383, 121,968.56 and 48,639 is: 67,121.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,383 : 121,968.56 = 48,639 : x
  2. Step 2: Convert to fraction form
    88,383/121,968.56 = 48,639/x
  3. Step 3: Cross multiply
    88,383x = 121,968.56 × 48,639
  4. Step 4: Simplify right side
    88,383x = 5,932,428,789.84
  5. Step 5: Solve for x
    x = 5,932,428,789.84/88,383
  6. Step 6: Final answer
    x = 67,121.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.