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Finding the Fourth Proportional to 76,741.22, 115,128.30 and 43,477.22

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Solution

The fourth proportional to 76,741.22, 115,128.30 and 43,477.22 is: 65,225.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,741.22 : 115,128.30 = 43,477.22 : x
  2. Step 2: Convert to fraction form
    76,741.22/115,128.30 = 43,477.22/x
  3. Step 3: Cross multiply
    76,741.22x = 115,128.30 × 43,477.22
  4. Step 4: Simplify right side
    76,741.22x = 5,005,458,427.33
  5. Step 5: Solve for x
    x = 5,005,458,427.33/76,741.22
  6. Step 6: Final answer
    x = 65,225.16

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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.