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Finding the Fourth Proportional to 85,531.98, 118,029.37 and 47,289.32

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Solution

The fourth proportional to 85,531.98, 118,029.37 and 47,289.32 is: 65,256.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,531.98 : 118,029.37 = 47,289.32 : x
  2. Step 2: Convert to fraction form
    85,531.98/118,029.37 = 47,289.32/x
  3. Step 3: Cross multiply
    85,531.98x = 118,029.37 × 47,289.32
  4. Step 4: Simplify right side
    85,531.98x = 5,581,527,820.73
  5. Step 5: Solve for x
    x = 5,581,527,820.73/85,531.98
  6. Step 6: Final answer
    x = 65,256.62

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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.