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Finding the Fourth Proportional to 68,607.72, 94,648.60 and 40,300.64

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Solution

The fourth proportional to 68,607.72, 94,648.60 and 40,300.64 is: 55,597.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,607.72 : 94,648.60 = 40,300.64 : x
  2. Step 2: Convert to fraction form
    68,607.72/94,648.60 = 40,300.64/x
  3. Step 3: Cross multiply
    68,607.72x = 94,648.60 × 40,300.64
  4. Step 4: Simplify right side
    68,607.72x = 3,814,399,155.10
  5. Step 5: Solve for x
    x = 3,814,399,155.10/68,607.72
  6. Step 6: Final answer
    x = 55,597.23

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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.