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Finding the Fourth Proportional to 56,647.44, 84,999.72 and 40,113.72

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Solution

The fourth proportional to 56,647.44, 84,999.72 and 40,113.72 is: 60,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,647.44 : 84,999.72 = 40,113.72 : x
  2. Step 2: Convert to fraction form
    56,647.44/84,999.72 = 40,113.72/x
  3. Step 3: Cross multiply
    56,647.44x = 84,999.72 × 40,113.72
  4. Step 4: Simplify right side
    56,647.44x = 3,409,654,968.16
  5. Step 5: Solve for x
    x = 3,409,654,968.16/56,647.44
  6. Step 6: Final answer
    x = 60,190.80

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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.