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Finding the Fourth Proportional to 68,709.28, 94,656.96 and 64,575.84

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Solution

The fourth proportional to 68,709.28, 94,656.96 and 64,575.84 is: 88,962.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,709.28 : 94,656.96 = 64,575.84 : x
  2. Step 2: Convert to fraction form
    68,709.28/94,656.96 = 64,575.84/x
  3. Step 3: Cross multiply
    68,709.28x = 94,656.96 × 64,575.84
  4. Step 4: Simplify right side
    68,709.28x = 6,112,552,703.85
  5. Step 5: Solve for x
    x = 6,112,552,703.85/68,709.28
  6. Step 6: Final answer
    x = 88,962.55

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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.