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Finding the Fourth Proportional to 61,405.44, 92,109.72 and 45,921.36

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Solution

The fourth proportional to 61,405.44, 92,109.72 and 45,921.36 is: 68,883.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,405.44 : 92,109.72 = 45,921.36 : x
  2. Step 2: Convert to fraction form
    61,405.44/92,109.72 = 45,921.36/x
  3. Step 3: Cross multiply
    61,405.44x = 92,109.72 × 45,921.36
  4. Step 4: Simplify right side
    61,405.44x = 4,229,803,611.62
  5. Step 5: Solve for x
    x = 4,229,803,611.62/61,405.44
  6. Step 6: Final answer
    x = 68,883.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.