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Finding the Fourth Proportional to 66,908, 92,335.92 and 40,045.44

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Solution

The fourth proportional to 66,908, 92,335.92 and 40,045.44 is: 55,264.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,908 : 92,335.92 = 40,045.44 : x
  2. Step 2: Convert to fraction form
    66,908/92,335.92 = 40,045.44/x
  3. Step 3: Cross multiply
    66,908x = 92,335.92 × 40,045.44
  4. Step 4: Simplify right side
    66,908x = 3,697,632,544.20
  5. Step 5: Solve for x
    x = 3,697,632,544.20/66,908
  6. Step 6: Final answer
    x = 55,264.43

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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.