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Finding the Fourth Proportional to 43,242.59, 64,858.52 and 11,655.12

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Solution

The fourth proportional to 43,242.59, 64,858.52 and 11,655.12 is: 17,481.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,242.59 : 64,858.52 = 11,655.12 : x
  2. Step 2: Convert to fraction form
    43,242.59/64,858.52 = 11,655.12/x
  3. Step 3: Cross multiply
    43,242.59x = 64,858.52 × 11,655.12
  4. Step 4: Simplify right side
    43,242.59x = 755,933,804.48
  5. Step 5: Solve for x
    x = 755,933,804.48/43,242.59
  6. Step 6: Final answer
    x = 17,481.23

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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.