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Finding the Fourth Proportional to 91,263.51, 126,066.92 and 68,772.51

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Solution

The fourth proportional to 91,263.51, 126,066.92 and 68,772.51 is: 94,998.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,263.51 : 126,066.92 = 68,772.51 : x
  2. Step 2: Convert to fraction form
    91,263.51/126,066.92 = 68,772.51/x
  3. Step 3: Cross multiply
    91,263.51x = 126,066.92 × 68,772.51
  4. Step 4: Simplify right side
    91,263.51x = 8,669,938,172.51
  5. Step 5: Solve for x
    x = 8,669,938,172.51/91,263.51
  6. Step 6: Final answer
    x = 94,998.96

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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.