Home / 78,307.04-108,010.18-49,999.97

Finding the Fourth Proportional to 78,307.04, 108,010.18 and 49,999.97

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Solution

The fourth proportional to 78,307.04, 108,010.18 and 49,999.97 is: 68,965.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,307.04 : 108,010.18 = 49,999.97 : x
  2. Step 2: Convert to fraction form
    78,307.04/108,010.18 = 49,999.97/x
  3. Step 3: Cross multiply
    78,307.04x = 108,010.18 × 49,999.97
  4. Step 4: Simplify right side
    78,307.04x = 5,400,505,759.69
  5. Step 5: Solve for x
    x = 5,400,505,759.69/78,307.04
  6. Step 6: Final answer
    x = 68,965.78

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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.