Home / 71,529.12-98,705.52-39,696.48

Finding the Fourth Proportional to 71,529.12, 98,705.52 and 39,696.48

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Solution

The fourth proportional to 71,529.12, 98,705.52 and 39,696.48 is: 54,778.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,529.12 : 98,705.52 = 39,696.48 : x
  2. Step 2: Convert to fraction form
    71,529.12/98,705.52 = 39,696.48/x
  3. Step 3: Cross multiply
    71,529.12x = 98,705.52 × 39,696.48
  4. Step 4: Simplify right side
    71,529.12x = 3,918,261,700.57
  5. Step 5: Solve for x
    x = 3,918,261,700.57/71,529.12
  6. Step 6: Final answer
    x = 54,778.55

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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.