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Finding the Fourth Proportional to 66,672, 92,009.36 and 36,456.64

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Solution

The fourth proportional to 66,672, 92,009.36 and 36,456.64 is: 50,311.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,672 : 92,009.36 = 36,456.64 : x
  2. Step 2: Convert to fraction form
    66,672/92,009.36 = 36,456.64/x
  3. Step 3: Cross multiply
    66,672x = 92,009.36 × 36,456.64
  4. Step 4: Simplify right side
    66,672x = 3,354,352,114.15
  5. Step 5: Solve for x
    x = 3,354,352,114.15/66,672
  6. Step 6: Final answer
    x = 50,311.26

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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.