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Finding the Fourth Proportional to 85,379.44, 117,812.76 and 47,655.28

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Solution

The fourth proportional to 85,379.44, 117,812.76 and 47,655.28 is: 65,758.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,379.44 : 117,812.76 = 47,655.28 : x
  2. Step 2: Convert to fraction form
    85,379.44/117,812.76 = 47,655.28/x
  3. Step 3: Cross multiply
    85,379.44x = 117,812.76 × 47,655.28
  4. Step 4: Simplify right side
    85,379.44x = 5,614,400,065.37
  5. Step 5: Solve for x
    x = 5,614,400,065.37/85,379.44
  6. Step 6: Final answer
    x = 65,758.22

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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.