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Finding the Fourth Proportional to 88,288.84, 121,757.88 and 65,684.44

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Solution

The fourth proportional to 88,288.84, 121,757.88 and 65,684.44 is: 90,584.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,288.84 : 121,757.88 = 65,684.44 : x
  2. Step 2: Convert to fraction form
    88,288.84/121,757.88 = 65,684.44/x
  3. Step 3: Cross multiply
    88,288.84x = 121,757.88 × 65,684.44
  4. Step 4: Simplify right side
    88,288.84x = 7,997,598,163.39
  5. Step 5: Solve for x
    x = 7,997,598,163.39/88,288.84
  6. Step 6: Final answer
    x = 90,584.47

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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.