Home / 71,637.25-98,960.31-67,853.78

Finding the Fourth Proportional to 71,637.25, 98,960.31 and 67,853.78

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Solution

The fourth proportional to 71,637.25, 98,960.31 and 67,853.78 is: 93,733.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,637.25 : 98,960.31 = 67,853.78 : x
  2. Step 2: Convert to fraction form
    71,637.25/98,960.31 = 67,853.78/x
  3. Step 3: Cross multiply
    71,637.25x = 98,960.31 × 67,853.78
  4. Step 4: Simplify right side
    71,637.25x = 6,714,831,136.84
  5. Step 5: Solve for x
    x = 6,714,831,136.84/71,637.25
  6. Step 6: Final answer
    x = 93,733.79

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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.