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Finding the Fourth Proportional to 68,440.30, 94,459.02 and 66,641.48

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Solution

The fourth proportional to 68,440.30, 94,459.02 and 66,641.48 is: 91,976.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,440.30 : 94,459.02 = 66,641.48 : x
  2. Step 2: Convert to fraction form
    68,440.30/94,459.02 = 66,641.48/x
  3. Step 3: Cross multiply
    68,440.30x = 94,459.02 × 66,641.48
  4. Step 4: Simplify right side
    68,440.30x = 6,294,888,892.15
  5. Step 5: Solve for x
    x = 6,294,888,892.15/68,440.30
  6. Step 6: Final answer
    x = 91,976.35

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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.