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Finding the Fourth Proportional to 78,759.88, 118,006.12 and 47,529.52

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Solution

The fourth proportional to 78,759.88, 118,006.12 and 47,529.52 is: 71,213.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,759.88 : 118,006.12 = 47,529.52 : x
  2. Step 2: Convert to fraction form
    78,759.88/118,006.12 = 47,529.52/x
  3. Step 3: Cross multiply
    78,759.88x = 118,006.12 × 47,529.52
  4. Step 4: Simplify right side
    78,759.88x = 5,608,774,240.66
  5. Step 5: Solve for x
    x = 5,608,774,240.66/78,759.88
  6. Step 6: Final answer
    x = 71,213.60

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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.