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Finding the Fourth Proportional to 85,473.82, 118,084.80 and 68,284

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Solution

The fourth proportional to 85,473.82, 118,084.80 and 68,284 is: 94,336.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,473.82 : 118,084.80 = 68,284 : x
  2. Step 2: Convert to fraction form
    85,473.82/118,084.80 = 68,284/x
  3. Step 3: Cross multiply
    85,473.82x = 118,084.80 × 68,284
  4. Step 4: Simplify right side
    85,473.82x = 8,063,302,483.20
  5. Step 5: Solve for x
    x = 8,063,302,483.20/85,473.82
  6. Step 6: Final answer
    x = 94,336.52

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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.