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Finding the Fourth Proportional to 88,252.68, 121,787.78 and 65,692.56

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Solution

The fourth proportional to 88,252.68, 121,787.78 and 65,692.56 is: 90,655.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,252.68 : 121,787.78 = 65,692.56 : x
  2. Step 2: Convert to fraction form
    88,252.68/121,787.78 = 65,692.56/x
  3. Step 3: Cross multiply
    88,252.68x = 121,787.78 × 65,692.56
  4. Step 4: Simplify right side
    88,252.68x = 8,000,550,716.45
  5. Step 5: Solve for x
    x = 8,000,550,716.45/88,252.68
  6. Step 6: Final answer
    x = 90,655.05

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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.