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Finding the Fourth Proportional to 68,442.72, 93,764.91 and 65,884.16

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Solution

The fourth proportional to 68,442.72, 93,764.91 and 65,884.16 is: 90,259.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,442.72 : 93,764.91 = 65,884.16 : x
  2. Step 2: Convert to fraction form
    68,442.72/93,764.91 = 65,884.16/x
  3. Step 3: Cross multiply
    68,442.72x = 93,764.91 × 65,884.16
  4. Step 4: Simplify right side
    68,442.72x = 6,177,622,332.83
  5. Step 5: Solve for x
    x = 6,177,622,332.83/68,442.72
  6. Step 6: Final answer
    x = 90,259.74

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.