Home / 98,531.84-135,993.60-66,705.92

Finding the Fourth Proportional to 98,531.84, 135,993.60 and 66,705.92

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Solution

The fourth proportional to 98,531.84, 135,993.60 and 66,705.92 is: 92,067.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,531.84 : 135,993.60 = 66,705.92 : x
  2. Step 2: Convert to fraction form
    98,531.84/135,993.60 = 66,705.92/x
  3. Step 3: Cross multiply
    98,531.84x = 135,993.60 × 66,705.92
  4. Step 4: Simplify right side
    98,531.84x = 9,071,578,202.11
  5. Step 5: Solve for x
    x = 9,071,578,202.11/98,531.84
  6. Step 6: Final answer
    x = 92,067.48

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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.