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Finding the Fourth Proportional to 79,129.31, 118,655.69 and 29,232.90

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Solution

The fourth proportional to 79,129.31, 118,655.69 and 29,232.90 is: 43,835.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,129.31 : 118,655.69 = 29,232.90 : x
  2. Step 2: Convert to fraction form
    79,129.31/118,655.69 = 29,232.90/x
  3. Step 3: Cross multiply
    79,129.31x = 118,655.69 × 29,232.90
  4. Step 4: Simplify right side
    79,129.31x = 3,468,649,774.04
  5. Step 5: Solve for x
    x = 3,468,649,774.04/79,129.31
  6. Step 6: Final answer
    x = 43,835.21

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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.