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Finding the Fourth Proportional to 68,216.67, 93,457.28 and 65,659.92

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Solution

The fourth proportional to 68,216.67, 93,457.28 and 65,659.92 is: 89,954.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,216.67 : 93,457.28 = 65,659.92 : x
  2. Step 2: Convert to fraction form
    68,216.67/93,457.28 = 65,659.92/x
  3. Step 3: Cross multiply
    68,216.67x = 93,457.28 × 65,659.92
  4. Step 4: Simplify right side
    68,216.67x = 6,136,397,199.92
  5. Step 5: Solve for x
    x = 6,136,397,199.92/68,216.67
  6. Step 6: Final answer
    x = 89,954.51

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.