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Finding the Fourth Proportional to 68,707.44, 94,818.60 and 65,558.16

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Solution

The fourth proportional to 68,707.44, 94,818.60 and 65,558.16 is: 90,472.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,707.44 : 94,818.60 = 65,558.16 : x
  2. Step 2: Convert to fraction form
    68,707.44/94,818.60 = 65,558.16/x
  3. Step 3: Cross multiply
    68,707.44x = 94,818.60 × 65,558.16
  4. Step 4: Simplify right side
    68,707.44x = 6,216,132,949.78
  5. Step 5: Solve for x
    x = 6,216,132,949.78/68,707.44
  6. Step 6: Final answer
    x = 90,472.49

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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.