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Finding the Fourth Proportional to 78,841.88, 108,825.93 and 48,636.62

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Solution

The fourth proportional to 78,841.88, 108,825.93 and 48,636.62 is: 67,133.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,841.88 : 108,825.93 = 48,636.62 : x
  2. Step 2: Convert to fraction form
    78,841.88/108,825.93 = 48,636.62/x
  3. Step 3: Cross multiply
    78,841.88x = 108,825.93 × 48,636.62
  4. Step 4: Simplify right side
    78,841.88x = 5,292,925,403.56
  5. Step 5: Solve for x
    x = 5,292,925,403.56/78,841.88
  6. Step 6: Final answer
    x = 67,133.42

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1.5x scale

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.